Questions
In a coil of area 10 cm2 and 10 turns, a magnetic field directed perpendicular to its plane and is changing at the rate of 108 gauss/second. The resistance of the coil is 20 ohm. The current in the coil will be
detailed solution
Correct option is A
I=|e|R=N(dϕ/dt)R=10×108×10−4×10−4×1020 Amp [104 Gauss = 1 Weber ] =5 ATalk to our academic expert!
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The magnetic field in the cylindrical region shown in figure increases at a constant rate of 20 mT/s. Each side of the square loop ABCD has a length of 1 cm and resistance of Find the current in the wire AB if the switch S is closed
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