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प्रश्न
When the current changes from +2A to −2A in 0.05 s, an emf of 8 V is induced in a coil. The co-efficient of self-induction of the coil is
पर्याय
0.2 H
0.4 H
0.8 H
0.1 H
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उत्तर
0.1 H
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संबंधित प्रश्न
What do you mean by self-induction?
What is meant by mutual induction?
Define self-inductance of a coil interms of
- magnetic flux and
- induced emf
How will you define the unit of inductance?
What do you understand by self-inductance of a coil?
Give the physical significance of self-inductance of a coil.
An inductor of inductance L carries an electric current i. How much energy is stored while establishing the current in it?
Show that the mutual inductance between a pair of coils is same (M12 = M21).
Two air core solenoids have the same length of 80 cm and same cross–sectional area 5 cm2. Find the mutual inductance between them if the number of turns in the first coil is 1200 turns and that in the second coil is 400 turns.
A long solenoid having 400 turns per cm carries a current 2A. A 100 turn coil of cross-sectional area 4 cm2 is placed co-axially inside the solenoid so that the coil is in the field produced by the solenoid. Find the emf induced in the coil if the current through the solenoid reverses its direction in 0.04 sec.
