Electro Magnetic Induction And Alternating Currents Question 214
Question: The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1 mA. The I 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
Options:
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
Show Answer
Answer:
Correct Answer: D
Solution:
- A transformer is essentially an A C device. DC source so no mutual induction between coils
$ \Rightarrow E_{2}=0 $ and $ I_{2}=0 $
