Electro Magnetic Induction And Alternating Currents Question 280
Question: In a step up transformer, if ratio of turns of primary to secondary is 1 : 10 and primary voltage is 230 V. If the load current is 2A, then the current in primary is [Orissa PMT 2005]
Options:
A) 20 A
B) 10 A
C) 2 A
D) 1 A
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{N_{P}}{N_{S}}=\frac{I_{S}}{I_{P}} $
Þ $ I_{P}=\frac{N_{S}}{N_{P}}I_{S}=\frac{10}{1}\times 2=20,A $ .
