Question

$\text{Assertion(A)}:$ However long a fuse wire may be,the safe current that can be allowed is the same.
$\text{Reason (R)}:$ The safe current that can be allowed to pass through a fuse wire depends on the radius of the wire.

• A. Both (A) and (R) are true and (R) is the correct explanation of A.
• B. Both (A) and (R) are true but (R) is not the correct explanation of A.
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Answer 1

The correct option is B Both (A) and (R) are true but (R) is not the correct explanation of A.

Both (A) and (R) are both correct but the safe current does not depend on area but on various facts like the material property, temperature, voltage rating etc.

hence assertion is correct and reason is correct but reason is not explaining the assertion.