4 Sections
16 Lessons
Lifetime

Expand all sectionsCollapse all sections

Unit I: Materials
The chapter from Unit I: Materials is an essential part of the CBSE Class 7 Science curriculum, covering concepts related to everyday substances, their properties, and uses. To strengthen learning, we bring you CBSE Class 7 Science MCQs – Online Practice Test with automatic scoring and per-question feedback. This quiz includes 60 carefully designed questions based strictly on the NCERT syllabus, making it ideal for students preparing for CBSE Class 7 board exam standards. The online practice test allows learners to attempt questions within a fixed time, receive instant results, and review detailed feedback. It is a perfect tool for self-assessment, revision, and boosting confidence for examinations.
7
Unit II: The World of the Living
Unit II: The World of the Living introduces students to important life science concepts such as plants, animals, and their interdependence within ecosystems. To make learning engaging and effective, we provide CBSE Class 7 Science MCQs – Online Practice Test with automatic scoring and per-question feedback. This quiz is designed with 60 NCERT-based questions that strictly follow the CBSE syllabus, ensuring relevance for exam preparation. Students can attempt the test in a timed environment, receive instant scoring, and view feedback for every question, which strengthens their conceptual clarity. This practice tool is ideal for CBSE Class 7 board exam standards, helping learners build confidence, enhance retention, and prepare effectively for assessments.
3
Unit III: How Things Work
Unit III: How Things Work in the CBSE Class 7 Science curriculum helps students explore the principles of motion, force, energy, and simple machines, making science both practical and engaging. To strengthen understanding, we offer CBSE Class 7 Science MCQs – Online Practice Test with automatic scoring and per-question feedback. This quiz consists of 60 carefully prepared questions aligned strictly with the NCERT syllabus, ensuring relevance for CBSE Class 7 board exam standards. The timed test allows students to attempt questions in a structured format, get instant scoring, and receive detailed feedback for every answer. It serves as an effective self-assessment tool to improve preparation, build confidence, and revise key concepts with accuracy.
3
Unit IV: Natural Phenomena
Unit IV: Natural Phenomena in the CBSE Class 7 Science syllabus introduces students to fascinating concepts such as light, reflection, shadows, and other natural occurrences that shape our daily lives. To help learners master these topics, we provide CBSE Class 7 Science MCQs – Online Practice Test with automatic scoring and per-question feedback. This quiz includes 60 NCERT-based multiple-choice questions, designed strictly as per the syllabus, making it ideal for CBSE Class 7 board exam standards. The online test offers a timed practice session, immediate scoring, and detailed feedback for each response, allowing students to identify strengths and areas for improvement. It is a reliable self-assessment and revision tool for exam preparation.
3

Chapter 12: Electric Current and Its Effects

CBSE Class 7 Science — Chapter 12: Electric Current and Its Effects — 60 Qs Timed Quiz

Chapter 12: Electric Current and Its Effects

Unit III: How Things Work — CBSE Class 7 — Subject: Science — CBSE Board Examinations

Highlight: These MCQs are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 7 board exam preparation.

Questions: 60

Duration: 60 minutes

Total Marks: 60 (1 mark each)

Select one option per question.

60:00

1. What is electric current?

A flow of water The flow of electric charge through a conductor A type of light Magnetic field around a magnet

2. Which of the following is a good conductor of electricity?

Wood Glass Copper Plastic

3. The unit of electric current is:

Ampere Volt Ohm Watt

4. Which device provides energy to make electric charges move in a circuit?

Bulb Cell (battery) Switch Ammeter

5. What happens to the current in a circuit if the switch is open?

It increases It becomes AC It reverses direction It stops flowing

6. In which type of circuit is there only one path for current to flow?

Series circuit Parallel circuit Short circuit Open circuit

7. If bulbs are connected in parallel and one bulb fuses, what happens to the others?

All go off Others keep glowing Brightness of others doubles Circuit becomes series

8. An ammeter should be connected in which way in a circuit?

In parallel with the component Not connected at all In series with the component Across the battery

9. A voltmeter is connected:

In parallel across the component In series with the component Not connected to the circuit Across the ammeter

10. Which of the following is an example of the heating effect of electric current?

Compass needle moving Electric iron heating up Deflection of galvanometer Electromagnet attraction

11. What is the purpose of a fuse in an electric circuit?

To protect against excessive current To increase current To store electricity To convert current to light

12. What happens around a current-carrying straight conductor?

It becomes hot only Light is produced Chemical reaction occurs A magnetic field is produced

13. An electromagnet is formed by:

Passing current through a copper plate Placing magnet on iron Coiling a wire around iron and passing current Heating an iron rod

14. To increase the potential difference in a circuit we should:

Connect cells in series Connect bulbs in series Use thicker wires Connect cells in parallel

15. The filament of an electric bulb is a:

Thick metal sheet Thin coiled wire Liquid metal Plastic rod

16. A short circuit is dangerous because it causes:

Too little current Change in battery type Very large current flow The bulbs to glow brighter only

17. Why are plastic or rubber coverings used on electric wires?

To increase current To make wires shiny To store charges To insulate and prevent shocks

18. Conventional current flows from:

Negative to positive terminal Positive to negative terminal Earth to battery West to east

19. Which process is based on the chemical effect of electric current?

Electroplating Heating a filament Using an electromagnet Using a fuse

20. Decomposition of a substance by passing electric current through it is called:

Electroplating Magnetization Electrolysis Polarization

21. An electromagnet will attract which of these materials when current flows?

Plastic beads Iron pins Wood chips Glass beads

22. The magnetic field around a conductor becomes stronger if:

The conductor is thicker The conductor is longer The conductor is painted The wire is coiled and current increased

23. Which instrument shows the magnetic effect of current by deflection?

Compass Thermometer Voltmeter Hygrometer

24. The iron core of an electromagnet remains magnetic as long as:

It is heated Electric current passes through the coil It is rubbed with a magnet only once It is kept in sunlight

25. Due to the heating effect of current, which of these is likely if current is too large?

Color changes only Magnetic field disappears Wire may melt or catch fire Battery becomes lighter

26. Which instrument is used to detect the presence of a small electric current?

Ammeter only Galvanometer Voltmeter only Thermometer

27. Two identical cells connected in series will have:

Half the voltage of one cell Same voltage as one cell No voltage Double the voltage of one cell

28. If cells are connected in parallel, the voltage across the combination is:

Sum of voltages Half of one cell Same as the voltage of one cell Zero

29. When a fuse blows (melts), it causes:

Increase in current Break in circuit protecting appliances Short circuit Decrease in battery voltage

30. In electroplating, the object to be coated is made the:

Cathode (negative electrode) Anode (positive electrode) Cell None of these

31. Which factor does NOT affect the resistance of a wire?

Length of wire Thickness of wire Color of wire's insulation Material of wire

32. A bulb connected in a complete circuit will glow because:

Current passes through filament making it hot and emit light The battery heats up only The switch charges the bulb The circuit changes chemical composition

33. Comparing two copper wires of same length, the thicker wire will have:

More resistance Less resistance Same resistance No resistance at all

34. Which of the following is NOT an effect of electric current?

Heating effect Magnetic effect Chemical effect Fluorescent effect (this is not a standard classification)

35. Which material is commonly used for electric heater elements?

Nichrome Copper Silver Aluminum

36. An iron core becomes a magnet when:

Put in sunlight Heated only Current is passed through wire wrapped around it Rubbing with paper

37. Which of these pairs are both conductors?

Rubber and glass Copper and aluminium Plastic and wood Paper and rubber

38. The earth wire in an electric supply system is for:

Safety (to carry fault current to earth) Supplying current to appliances Increasing voltage Measuring current

39. Which device converts electrical energy into sound using the magnetic effect of current?

Electric iron Bulb Electric bell (buzzer) Heater

40. Which of the following conducts electricity when molten or in solution?

Iron Electrolyte (e.g., salt solution) Wood Plastic

41. A fuse should be connected in which wire of a household circuit?

Neutral wire Earth wire Live (phase) wire Any wire

42. What causes the bulb filament to emit light?

Heating effect of electric current Magnetic effect of current Chemical reaction in filament Friction

43. A circuit in which electric current can flow is called:

Open circuit Closed circuit Broken circuit Short circuit only

44. Insulation of wires prevents:

Flow of current Heating of wires Electric shock on touching live parts Short circuit only

45. In an electric bell, the electromagnet is used to:

Heat the bell Attract and release the hammer repeatedly Store electricity Light the bell

46. Most household wiring is done using which metal?

Iron Aluminium Lead Copper

47. A battery converts which type of energy into electrical energy?

Chemical energy Mechanical energy Light energy Thermal energy

48. The + and - signs on a cell indicate:

Magnetic poles Temperature Positive and negative terminals Current strength

49. Which device is used to make or break an electric circuit?

Resistor Ammeter Voltmeter Switch

50. What causes charges to move in a circuit?

A magnet only Potential difference provided by a cell/battery A switch alone Color of wires

51. Which property makes copper suitable for wires?

Low resistance and ductility High resistance Magnetic property Low melting point

52. The pattern of magnetic field lines around a straight current-carrying conductor is:

Straight lines away from wire Radial lines only Concentric circles around the wire Zig-zag lines

53. A coil of wire which shows magnetic properties when current passes through it is called:

Transformer Solenoid Diode Rectifier

54. A common dry cell has which two electrodes?

Zinc and carbon Iron and copper Silver and gold Aluminium and lead

55. If there is a break in a wire of a circuit, the circuit is:

Short circuit Closed circuit Parallel circuit Open circuit

56. Which appliance primarily uses the heating effect of current?

Electric motor Loudspeaker Electric heater Electromagnet

57. During electrolysis of copper sulphate solution using copper electrodes, copper is deposited at the:

Anode Cathode Middle of solution Battery

58. To produce magnetic effect around a conductor we need:

Electric current A permanent magnet only Light Heat only

59. Electric bulb converts electrical energy mainly into:

Chemical energy Sound energy Light and heat energy Nuclear energy

60. Which of the following is NOT a safety measure in household electrical systems?

Earthing Removing insulation from live wires Using fuses Using switches

Score: 0 / 60

Time taken: 00:00

Correct: 0

Wrong: 0

Unattempted: 60

Per-question feedback is shown below each question. Correct answers are highlighted after submission.

When time ends the quiz will auto-submit and answers will be shown.

Relevant Titles

CBSE Class 7 Electric Current MCQs — 60-Question Online Test
Practice Electric Current: CBSE Class 7 MCQs with Auto Scoring
Chapter 12 Test — Electric Current & Its Effects | Class 7 Science MCQs
CBSE Class 7 Science: Timed MCQ Test on Electric Current (Auto Score)
Free Online Practice — Class 7 Electric Current MCQs for CBSE Board

Chapter Overview

Master Chapter 12: Electric Current and Its Effects with our CBSE Class 7 Science MCQs Electric Current online practice test. Designed strictly to match the NCERT syllabus, this timed 60-question quiz offers automatic scoring and clear per-question feedback to help students identify strengths and weaknesses. The interactive format reinforces concepts such as current, circuits, magnetic and heating effects, electromagnets, and safety measures. Ideal for CBSE board exam preparation, teachers and parents can use these MCQs for classroom drills or revision at home. Attempt, review explanations, and track progress — all in one student-friendly test tailored for Class 7 science success and confidence.

Keywords

cbse class 7 electric current mcqs online, nc ert aligned class 7 electric current quiz, class 7 science online test automatic scoring, 60 question electric current practice test, per question feedback mcqs class 7, cbse board exam preparation electric current, timed class 7 science mcq test, best online mcqs for class 7 science

Chapter 11: Motion and Time

Chapter 13: Light

About Us
Contact Us
Privacy Policy
Terms of Use
Terms and Conditions
Buy Online Courses

Chapter 12: Electric Current and Its Effects

Relevant Titles

Chapter Overview

Tags

Keywords

Login with your site account

Register a new account

Search

Modal title