Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A transformer has 50 turns in the primary and 100 in the secondary. If the primary is connected to a 220 V DC supply, what will be the voltage across the secondary?
Text Solution
Verified by ExpertsThe correct answer is:
A
Step 1: Understand that a transformer operates on the principle of electromagnetic induction, which only works with alternating current (AC). Connecting a DC supply to the primary side will not induce any voltage in the secondary.
Step 2: Since a DC supply does not create a changing magnetic field, the transformer essentially behaves as an open circuit for DC.
Step 3: Therefore, without an alternating current, no voltage will be induced in the secondary winding.
Conclusion: The voltage across the secondary is 0 V. No AC means no transformation in voltage.
Hence, the answer is 0 V.
Step 2: Since a DC supply does not create a changing magnetic field, the transformer essentially behaves as an open circuit for DC.
Step 3: Therefore, without an alternating current, no voltage will be induced in the secondary winding.
Conclusion: The voltage across the secondary is 0 V. No AC means no transformation in voltage.
Hence, the answer is 0 V.
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