Electro Magnetic Induction And Alternating Currents Question 532

Question: When the current in a coil changes from 8 ampere to 2 ampere in 3×102 second, the e.m.f. induced in the coil is 2 volt . The self-inductance of the coil (in millihenry) is [MNR 1991; UP SEAT 2000; Pb PET 2004]

Options:

A) 1

B) 5

C) 20

D) 10

Show Answer

Answer:

Correct Answer: D

Solution:

e=Ldidt2=L(823×102)
L=0.01 H=10 mH



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक