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 difference2.inductance3.Rate of heat production in coil(a) only 1(b) 1 and 3(c)only 3(d) 1,2 and 3Q2.After insertion of rod,current in the circuit:a)Increases with timeb)Decreases with timec)Remains constant with timed)First decreases with time then becomes constant

Amit Saxena , 11 Years ago

Grade upto college level