Electro Magnetic Induction And Alternating Currents Question 336
Question: The resistance in the following circuit is increased at a particular instant. At this instant the value of resistance is 10W. The current in the circuit will be now
Options:
A) i = 0.5 A
B) i > 0.5 A
C) i < 0.5 A
D) i = 0
Show Answer
Answer:
Correct Answer: B
Solution:
If resistance is constant (10W) then steady current in the circuit $ i=\frac{5}{10}=0.5,A $ . But resistance is increasing it means current through the circuit start decreasing. Hence inductance comes in picture which induces a current in the circuit in the same direction of main current. So i > 0.5 A.
