Question

Chapter 30, Problem 003

In the figure, a 180-turn coil of radius 2.6 cm and resistance 4.4 Ω is coaxial with a solenoid of 180 turns/cm and diameter 3.6 cm. The solenoid current drops from 2.1 A to zero in time interval Δt = 23 ms. What current is induced in amperes in the coil during Δt?

Chapter 30, Problem 003 Your answer is partially correct. Try again. In the figure, a 180-turn coil of radius 2.6 cm and resistance 4.4 2 is coaxial with a solenoid of 180 turns/cm and diameter 3.6 cm. The solenoid current drops from 2.1 A to zero in time interval At = 23 ms. What current is induced in amperes in the coil during At? GOOOOOOOOOOOOOOOOOOOO EQENEN ADOQQASLAKKO Solenoid Number10.1404 units a the tolerance is +/-2%

Answer 1

Find the initial and final magnetic field inside the solenoid and use that along with Faraday’s electromagnetic induction law to find the EMF and hence find the current using the resistance as shown below,

the solenot Bi oni o(13000 tumy21A) -2 4.75X10 T berams 2ero when cunrent in the Coil fiel is Present only in the potion of area of coil intercepted by solenoia So fux i = NBiAsdeno? T= 3.6 200 NBiT 475 X10-2T)L80) r (2 200 87x103 Tm2 Q - - ) - (o-3.7 X103 At At 23x10-3S 0 378 V O 086 A 4 42

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