Electro Magnetic Induction And Alternating Currents Question 263

Question: The number of turns in primary and secondary coils of a transformer are 100 and 20 respectively. If an alternating potential of 200 volt is applied to the primary, the induced potential in secondary will be [RPET 1999]

Options:

A) 10 V

B) 40 V

C) 1000 V

D) 20,000 V

Show Answer

Answer:

Correct Answer: B

Solution:

$ \frac{E_{p}}{E_{s}}=\frac{N_{p}}{N_{s}}\Rightarrow \frac{200}{E_{s}}=\frac{100}{20}\Rightarrow E_{s}=40\ V $



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