Electricity: Circuits and their Components Part 2: MCQs (Q26–Q50)

📘 Chapter 3 – Electricity: Circuits and their Components

🔹 Part 2: Symbols of Electric Components (Q26–Q50)

Q26. The symbol (⊖ ─── ⊕) represents:

A) Switch
B) Battery
C) Cell
D) Bulb

✅ Answer: C) Cell

Explanation:

(A) Switch → Different symbol (break/line).
(B) Battery → Group of cells.
(C) Cell → Long line = positive, short line = negative (Correct).
(D) Bulb → Circle with cross.

Q27. Which symbol represents a battery?

A) One long and one short line
B) Two circles connected
C) Several cells joined
D) Circle with cross

✅ Answer: C) Several cells joined

Explanation:

Battery is a combination of cells shown by multiple long-short line pairs (Correct).

Q28. The symbol (○✕) represents:

A) Bulb
B) Switch
C) Fuse
D) Battery

✅ Answer: A) Bulb

Explanation:
A circle with a cross (×) represents an electric bulb.

Q29. The symbol (—/ —) represents:

A) Switch (open)
B) Switch (closed)
C) Wire
D) Fuse

✅ Answer: A) Switch (open)

Explanation:
A gap (break) indicates open switch (no current flow).

Q30. Which of these represents a closed switch?

A) Line broken
B) Line connected
C) Circle with cross
D) Two parallel lines

✅ Answer: B) Line connected

Q31. The symbol (zig-zag line) represents:

A) Bulb
B) Resistor
C) Cell
D) Wire

✅ Answer: B) Resistor

Q32. Which of these is the correct symbol of a fuse?

A) A circle with ×
B) Rectangle
C) Small rectangle on a line
D) Zig-zag line

✅ Answer: C) Small rectangle on a line

Q33. Which symbol is used for wires crossing without connection?

A) Dot at intersection
B) Lines crossing without dot
C) Circle with cross
D) Zig-zag line

✅ Answer: B) Lines crossing without dot

Q34. Which symbol is used for connected wires?

A) Lines crossing with dot
B) Lines crossing without dot
C) Circle with cross
D) Parallel lines

✅ Answer: A) Lines crossing with dot

Q35. Which symbol is used for a voltmeter?

A) Circle with V inside
B) Circle with A inside
C) Circle with cross
D) Rectangle

✅ Answer: A) Circle with V inside

Q36. The symbol of an ammeter is:

A) Circle with A inside
B) Circle with V inside
C) Circle with cross
D) Small rectangle

✅ Answer: A) Circle with A inside

Q37. The symbol for a wire is:

A) Straight line
B) Zig-zag line
C) Circle with ×
D) Two lines

✅ Answer: A) Straight line

Q38. The symbol of a resistor is shown by:

A) Zig-zag line
B) Circle with cross
C) Two parallel lines
D) Dot

✅ Answer: A) Zig-zag line

Q39. In circuit diagrams, the positive terminal of a cell is shown by:

A) Short line
B) Long line
C) Circle with dot
D) Arrow

✅ Answer: B) Long line

Q40. Which of the following is the correct symbol for a battery of two cells?

A) One long and one short line
B) Two long-short line pairs connected
C) Circle with ×
D) Circle with A

✅ Answer: B) Two long-short line pairs connected

Q41. Which device is represented by a rectangle in a circuit diagram?

A) Battery
B) Fuse
C) Resistor
D) Switch

✅ Answer: C) Resistor

Q42. What does a small rectangle on a line indicate?

A) Switch
B) Fuse
C) Battery
D) Cell

✅ Answer: B) Fuse

Q43. The symbol (circle with arrow inside) represents:

A) Motor
B) Battery
C) Generator
D) Bulb

✅ Answer: A) Motor

Q44. The component used to open/close a circuit is represented by:

A) Break in line
B) Circle with ×
C) Zig-zag line
D) Long-short lines

✅ Answer: A) Break in line (Switch)

Q45. Which is NOT a correct circuit symbol?

A) Circle with V → Voltmeter
B) Circle with A → Ammeter
C) Zig-zag line → Resistor
D) Circle with cross → Fuse

✅ Answer: D) Circle with cross → Fuse

Explanation:
Circle with cross is bulb, not fuse.

Q46. A circuit symbol helps to:

A) Save time in drawing
B) Understand circuits easily
C) Represent components universally
D) All of the above

✅ Answer: D) All of the above

Q47. Which symbol is used for a lamp in a circuit?

A) Circle with ×
B) Zig-zag line
C) Long-short line
D) Rectangle

✅ Answer: A) Circle with ×

Q48. Which of these symbols shows an open switch?

A) Two lines connected
B) A line with a gap
C) Circle with ×
D) Zig-zag line

✅ Answer: B) A line with a gap

Q49. Which symbol indicates an electric cell in circuit diagrams?

A) Circle with ×
B) Long-short line pair
C) Zig-zag line
D) Dot

✅ Answer: B) Long-short line pair

Q50. The symbol with multiple long-short line pairs connected indicates:

A) Cell
B) Bulb
C) Battery
D) Fuse

✅ Answer: C) Battery

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