Questions
A very long straight cylindrical conductor of radius ‘a’ is carrying a steady current. If magnetic induction at the surface of a conductor is , what is the magnetic induction at a radial distance ?
detailed solution
Correct option is D
B0=μ0i2πawhen p≤a,B=μ02Jr=μ02(iπa2)rAt r=a2,B=μ02,iπa2.a2=μ0i4πa=B02Talk to our academic expert!
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A virtual current of 4A and 50 Hz flows in an ac circuit containing a coil. The power consumed in the coil is 240 W. If the virtual voltage across the coil is 100 V its inductance will be
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