Question

your wire has a diametre of 2.0mm with a resistivity of 1.5 x 10^-6 Ohms m forms a single square loop with sides 2cm and placed in an external magnetic field pointing out of the page eiht a magnitude of 6.0T. where t= 3 seconds the external mag filed decreases at a constant rate until it reaches 0T at t = 5s what is the current un the loop? express in mA. clockwise is - and counter is + balue

Answer 1

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Soln 4= 20m wire Yesistivity Radiour of of wire at 6.0T of P= 1.5810-6 am R = 2x10m magnatic field t=3su B = magnatic field at to see the rezistance of the ll Sx40 R=07 wire TR2 2. Схохих 2 х/o 2 3.14 X 4 X10 R = 0.955 À 10 2 s the End induced in the loop تی End - sd 3 Volt 6-o 5-3 ot then the current in the loop 1 = Emd R 3 0.955 X10 2 I= 0.314 MA required corrent