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Question (31)

QN0061

A student connects both terminals of a lamp to the positive terminal of a cell. What will happen?

(A) Lamp glows brightly
(B) Lamp glows dimly
(C) Lamp does not glow
(D) Battery bursts

Correct Answer: C

Explanation:

Current cannot flow through such a connection.

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Question (32)

QN0062

In a simple electrical circuit, current passes through the filament when the circuit is

(A) broken
(B) open
(C) complete
(D) disconnected

Correct Answer: C

Explanation:

A complete circuit allows current flow.

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Question (33)

QN0063

Which arrangement correctly represents the order of connection in a battery?

(A) Positive to positive
(B) Negative to negative
(C) Positive to negative
(D) Positive to filament

Correct Answer: C

Explanation:

Cells are connected positive terminal to negative terminal.

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Question (34)

QN0064

A student observes that a lamp glows in one arrangement but not in another. The most important factor responsible is

(A) colour of the wires
(B) completeness of the circuit
(C) shape of the table
(D) size of the switch

Correct Answer: B

Explanation:

The lamp glows only in a complete circuit.

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Question (35)

QN0065

Which of the following is essential for an LED to glow?

(A) Filament heating
(B) Correct terminal connections
(C) Wooden wires
(D) Open circuit

Correct Answer: B

Explanation:

LEDs require proper polarity to glow.

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Question (36)

QN0066

Why is a switch placed in an electrical circuit?

(A) To increase battery size
(B) To control current flow
(C) To change wire colour
(D) To cool the filament

Correct Answer: B

Explanation:

A switch controls the flow of current in the circuit.

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Question (37)

QN0067

A student makes a circuit with a cell, wires, and a lamp. The lamp does not glow because one wire is loose. This happens because

(A) the circuit is incomplete
(B) the filament becomes longer
(C) the battery becomes positive
(D) the lamp changes shape

Correct Answer: A

Explanation:

Loose wires create an incomplete circuit.

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Question (38)

QN0068

In a torchlight, the spring side of the holder usually touches the ______ terminal of the cell.

(A) positive
(B) negative
(C) middle
(D) filament

Correct Answer: B

Explanation:

The spring side touches the negative terminal.

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Question (39)

QN0069

A student uses two cells in a holder. The battery positive terminal will be the terminal connected to the

(A) positive terminal of one cell
(B) negative terminal of both cells
(C) filament of lamp
(D) switch only

Correct Answer: A

Explanation:

The free positive terminal becomes the battery positive terminal.

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Question (40)

QN0070

Which statement best defines an electrical circuit?

(A) A collection of switches only
(B) A complete path through which electric current flows
(C) A glass bulb with filament
(D) A wire without a cell

Correct Answer: B

Explanation:

An electrical circuit is a complete path for current flow.

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Question (31)

A student connects both terminals of a lamp to the positive terminal of a cell. What will happen?

Explanation:

Link:

Question (32)

In a simple electrical circuit, current passes through the filament when the circuit is

Explanation:

Link:

Question (33)

Which arrangement correctly represents the order of connection in a battery?

Explanation:

Link:

Question (34)

A student observes that a lamp glows in one arrangement but not in another. The most important factor responsible is

Explanation:

Link:

Question (35)

Which of the following is essential for an LED to glow?

Explanation:

Link:

Question (36)

Why is a switch placed in an electrical circuit?

Explanation:

Link:

Question (37)

A student makes a circuit with a cell, wires, and a lamp. The lamp does not glow because one wire is loose. This happens because

Explanation:

Link:

Question (38)

In a torchlight, the spring side of the holder usually touches the ______ terminal of the cell.

Explanation:

Link:

Question (39)

A student uses two cells in a holder. The battery positive terminal will be the terminal connected to the

Explanation:

Link:

Question (40)

Which statement best defines an electrical circuit?

Explanation:

Link:

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