Question

Assertion (A): When the resistance of the combination is to be increased, they are combined in series.

Reason (R): When the resistance of the combination is to be decreased, they are combined in parallel.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

• Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

• Assertion (A) is false, but Reason (R) is true.

• Assertion (A) is true, but Reason (R) is false.

Answer 1

Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

Explanation:

Assertion is true because, in series, the equivalent resistance is the sum of all individual resistances, so it is larger than any one resistance. Reason is also true because connecting resistors in parallel decreases the equivalent resistance. But the reason describes the opposite case; it does not explain why a series combination increases resistance.