Question

Assertion (A): A given current X will produce more heat per unit time when the two resistors Y and Z are connected between the same two points.

Reason (R): A given current X will produce more heat per unit time when the two resistors Y and Z are connected end to end consecutively.

Options

• Both A and R are true and R is correct explanation of the assertion.

• Both A and R are true but R is not the correct explanation of the assertion.

• A is true but R is false.

• A is false but R is true.

Answer 1

A is false but R is true.

Explanation:

The assertion is false because connecting resistors between the same two points means a parallel setup, which reduces total resistance and generates less total heat for a fixed main current X. The reason is true because connecting resistors end-to-end consecutively refers to a series circuit; this increases the overall circuit resistance, which generates more heat per unit time (H = X²R_total t) for the given overall current.