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Question
Assertion (A): Primary coil of step up transformer is thinner as it has more turns than the secondary coil.
Reason (R): The induced e.m.f. produced in secondary coil is directly proportional to number of turns in the secondary coil.
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.
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Solution
Assertion (A) is false, but Reason (R) is true.
Explanation:
The assertion is false. In a step-up transformer, the primary coil has fewer turns and is thicker, while the secondary coil has more turns and is thinner. The reason is true because the induced e.m.f. in the secondary coil is directly proportional to the number of turns in the secondary coil. Therefore assertion is false but reason is true.
