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An inductor having self inductance L with its coil resistance R is connected accrodd a battery of emf E. When circuit is in steady state at t=0 an iron rod is inserted into the inductor due to which its inductance becomes nL(n>1).

Q1.After insertion of rod which of the following quantities will change with time?

1.Potential difference

2.inductance

3.Rate of heat production in coil

(a) only 1    (b) 1 and 3     (c)only 3     (d) 1,2 and 3

 

Q2.After insertion of rod,current in the circuit:

a)Increases with time       

b)Decreases with time

c)Remains constant with time

d)First decreases with time then becomes constant

 

Amit Saxena , 10 Years ago
Grade upto college level
anser 0 Answers

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