A large research solenoid has a self-inductance of 30.0 H. (a) What induced emf opposes shutting it off when 120 A of current through it is switched off in 95.0 ms? (b) How much energy is stored in the inductor at full current? (c) At what rate in watts must energy be dissipated to switch the current off in 95.0 ms? (d) In view of the answer to the last part, is it surprising that shutting it down this quickly is difficult?
A large research solenoid has a self-inductance of 30.0 H. (a) What induced emf opposes shutting it off when 120 A of current through it is switched off in 95.0 ms? (b) How much energy is stored in the inductor at full current? (c) At what rate in watts must energy be dissipated to switch the current off in 95.0 ms? (d) In view of the answer to the last part, is it surprising that shutting it down this quickly is difficult?
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