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 $
