# Solution - An Air-cored Solenoid with Length 30 cm, Area of Cross-section 25 cm^2 And Number of Turns 500, Carries a Current of 2.5 A. the Current is Suddenly Switched off in a Brief Time of 10^−3 s - Inductance - Mutual Inductance

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#### Question

An air-cored solenoid with length 30 cm, area of cross-section 25 cm2 and number of turns 500, carries a current of 2.5 A. The current is suddenly switched off in a brief time of 10−3 s. How much is the average back emf induced across the ends of the open switch in the circuit? Ignore the variation in magnetic field near the ends of the solenoid.

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#### Reference Material

Solution for question: An Air-cored Solenoid with Length 30 cm, Area of Cross-section 25 cm^2 And Number of Turns 500, Carries a Current of 2.5 A. the Current is Suddenly Switched off in a Brief Time of 10^−3 s concept: Inductance - Mutual Inductance. For the courses CBSE (Arts), CBSE (Commerce), CBSE (Science)
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