Question

In a step-up transformer, the value of current in secondary coil compared to the primary coil is

• A. equal
• B. less
• C. more
• D. no relation between the two

Hint:

In a step-up transformer, voltage increases while current decreases. This is an inverse relationship governed by the power conservation principle.

Answer 1

The Correct Option is B

Step 1: Understanding transformers.
In an ideal transformer, the voltage and current are related through the turns ratio. For a step-up transformer, the voltage in the secondary coil is higher than that in the primary coil.
Step 2: Current and voltage relation.
According to the law of conservation of energy and the transformer equation, when the voltage increases in the secondary coil, the current decreases. This inverse relationship ensures that the power transferred remains constant.
Step 3: Conclusion.
Thus, in a step-up transformer, the current in the secondary coil is less than the current in the primary coil.
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