There are 163 windings around a cylinder made of a non-magnetic material. The cylinder has a radius r= 4.1cm and a length L=7m. The resistance of a sufficiently long cylinder (r << L) is R= 2N. The applied voltage is E = 5 V at the initial moment (t= 0). At the time t= 8s what is the value of the voltage E, in units of mega-volts that must be applied to the ends of the solenoid, in order for the current to increase directly proportional with time (Take lo = 4x x 10 7T- m/A and x = 3.14.) O 3.18 O 18.44 O 9.54 O 6.36
There are 163 windings around a cylinder made of a non-magnetic material. The cylinder has a radius r= 4.1cm and a length L=7m. The resistance of a sufficiently long cylinder (r << L) is R= 2N. The applied voltage is E = 5 V at the initial moment (t= 0). At the time t= 8s what is the value of the voltage E, in units of mega-volts that must be applied to the ends of the solenoid, in order for the current to increase directly proportional with time (Take lo = 4x x 10 7T- m/A and x = 3.14.) O 3.18 O 18.44 O 9.54 O 6.36
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