STANDARDPhysics-Electromagnetic Induction
STANDARD Physics Transformers MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1 mA. The number of turns of the primary and secondary windings are 50 and 100 respectively. The voltage in the secondary and the current drawn by the circuit in the secondary are respectively
A
20 V and 0.5 mA
B
20 V and 2.0 mA
C
10 V and 0.5 mA
D
Zero and therefore no current
Correct Answer
Option D
Detailed Explanation
A transformer does not work with DC supply because there is no change in magnetic flux, hence no induced EMF in the secondary. Therefore, the voltage in the secondary is zero and no current is drawn.
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