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Question (31)

QN0036402

Two resistors of 6 Ω and 3 Ω are connected in parallel. Their equivalent resistance is:

(A) 2 Ω
(B) 3 Ω
(C) 6 Ω
(D) 9 Ω

Correct Answer: A

Explanation:

1/R = 1/6 + 1/3 = 1/2, so R = 2 Ω.

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Question (32)

QN0036403

Three resistors of 6 Ω each are connected in parallel. Their equivalent resistance is:

(A) 18 Ω
(B) 9 Ω
(C) 3 Ω
(D) 2 Ω

Correct Answer: D

Explanation:

For three equal resistors in parallel, R = 6/3 = 2 Ω.

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Question (33)

QN0036404

A 12 V battery is connected across a 4 Ω resistor. The current through the resistor is:

(A) 0.33 A
(B) 2 A
(C) 3 A
(D) 48 A

Correct Answer: C

Explanation:

I = V/R = 12/4 = 3 A.

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Question (34)

QN0036405

Two resistors of 10 Ω and 20 Ω are connected in parallel across 10 V. The total current supplied by the battery is:

(A) 0.5 A
(B) 1.0 A
(C) 1.5 A
(D) 2.0 A

Correct Answer: C

Explanation:

Branch currents are 1 A and 0.5 A. Total current = 1.5 A.

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Question (35)

QN0036406

In a parallel combination, the potential difference across each resistor is:

(A) Different for every resistor
(B) Zero
(C) The same
(D) Always half the battery voltage

Correct Answer: C

Explanation:

Each parallel branch is connected across the same two points, so the potential difference is the same.

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Question (36)

QN0036407

A 6 Ω and a 3 Ω resistor are connected in parallel to a 12 V source. The current through the 6 Ω resistor is:

(A) 1 A
(B) 2 A
(C) 3 A
(D) 6 A

Correct Answer: B

Explanation:

I = V/R = 12/6 = 2 A.

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Question (37)

QN0036408

A 6 Ω and 3 Ω resistor are connected in parallel across 12 V. The total current is:

(A) 2 A
(B) 4 A
(C) 6 A
(D) 8 A

Correct Answer: C

Explanation:

Currents are 2 A and 4 A. Total current = 6 A.

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Question (38)

QN0036409

A 4 Ω resistor and a 12 Ω resistor are connected in series across 32 V. The potential difference across the 12 Ω resistor is:

(A) 8 V
(B) 16 V
(C) 24 V
(D) 32 V

Correct Answer: C

Explanation:

Total R = 16 Ω, I = 2 A. Voltage across 12 Ω = 2 × 12 = 24 V.

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Question (39)

QN0036410

A 20 Ω lamp and a 4 Ω resistor are connected in series to a 6 V battery. The current through the circuit is:

(A) 0.10 A
(B) 0.20 A
(C) 0.25 A
(D) 1.50 A

Correct Answer: C

Explanation:

Total resistance = 24 Ω. I = 6/24 = 0.25 A.

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Question (40)

QN0036411

In Question 39, the potential difference across the 20 Ω lamp is:

(A) 1 V
(B) 2 V
(C) 5 V
(D) 6 V

Correct Answer: C

Explanation:

V = IR = 0.25 × 20 = 5 V.

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Question (31)

Two resistors of 6 Ω and 3 Ω are connected in parallel. Their equivalent resistance is:

Explanation:

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Question (32)

Three resistors of 6 Ω each are connected in parallel. Their equivalent resistance is:

Explanation:

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Question (33)

A 12 V battery is connected across a 4 Ω resistor. The current through the resistor is:

Explanation:

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Question (34)

Two resistors of 10 Ω and 20 Ω are connected in parallel across 10 V. The total current supplied by the battery is:

Explanation:

Link:

Question (35)

In a parallel combination, the potential difference across each resistor is:

Explanation:

Link:

Question (36)

A 6 Ω and a 3 Ω resistor are connected in parallel to a 12 V source. The current through the 6 Ω resistor is:

Explanation:

Link:

Question (37)

A 6 Ω and 3 Ω resistor are connected in parallel across 12 V. The total current is:

Explanation:

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Question (38)

A 4 Ω resistor and a 12 Ω resistor are connected in series across 32 V. The potential difference across the 12 Ω resistor is:

Explanation:

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Question (39)

A 20 Ω lamp and a 4 Ω resistor are connected in series to a 6 V battery. The current through the circuit is:

Explanation:

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Question (40)

In Question 39, the potential difference across the 20 Ω lamp is:

Explanation:

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