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Self Induction

3218. In an i...

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3218. In an inductor, the current I varies with time t as5A16 (A/s) t. If induced emf in the inductoris 5 mV, the self inductance of the inductor is(1) 3.75% 10-3H(2) 3.75% 10-4H(3) 3.125% 10-3H(4) 3.125% 10-4HSX

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Q. An inductor-coil of inductance

20 mH

having resistance of

10 Ω

is joined to an ideal battery of emf

5 V .

Find the emf induced across the inductor at

t = 0 s.

Q. The current (in Ampere) in an inductor is given by

I = 5 + 16 t

t

is in seconds. The self-induced emf in it is

10 m V

. Find the self-inductance.

Q. More than One Answer Type
एक से अधिक उत्तर प्रकार के प्रश्न

The current I in an inductor is given by relation I = (5 + 10 t) A, where t is in second. The self-induced emf in it is 10 mV at t = 1 s. Then

किसी प्रेरक में धारा I को सम्बन्ध I = (5 + 10 t) A द्वारा व्यक्त किया जाता है, जहाँ t सेकण्ड में है। t = 1 s पर इसमें स्व-प्रेरित वि.वा.ब. 10 mV है। तब

Q. An average emf of

20 V

is induced in an inductor when the current in it is changed from

2.5 A

in one direction to

1.5 A

in the opposite direction in

0.1 s .

Find the self-inductance of the inductor.

Q. At the instant when the current in an inductor is increasing at a rate of

0.0640 A / s

, the magnitude of the self-induced emf is

0.0160 V

. What is the inductance of the inductor?

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