Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The

Question

Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is

Options:

A . 5 mH

B . 10 mH

C . 5 H

D . 10 H

Answer: Option C

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Question 1. A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is....

Question 2. The direction of induced e.m.f. can be found by....

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Question 5. The inductance of a coil will increase under all the following conditions except....

Question 6. The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit c....the circuit changes at the rate of unit Weber turns.

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Question 8. Air-core coils are practically free from....

Question 9. The coefficient of coupling between two air core coils depends on....

Question 10. A laminated iron core has reduced eddy-current losses because....

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