emi

Related Questions

• If a copper ring is moved quickly towards south pole of a powerful stationary bar magnet, then

  ---

• A copper disc of radius 0.1 m is rotated about its centre with 10 revolutions per second in a uniform magnetic field of 0.1 Tesla with its plane perpendicular to the field. The e.m.f. induced across the radius of disc is

  ---

• If the current is halved in a coil, then the energy stored is how much times the previous value

  ---

• Two coils A and B having turns 300 and 600 respectively are placed near each other, on passing a current of 3.0 ampere in A, the flux linked with A is $1.2 \times {10^{ - 4}}\,weber$ and with B it is $9.0 \times {10^{ - 5}}\,weber$. The mutual inductance of the system is

  ---

• A circular coil of 500 turns of wire has an enclosed area of $0.1\,{m^2}$ per turn. It is kept perpendicular to a magnetic field of induction 0.2 T and rotated by 180° about a diameter perpendicular to the field in 0.1 sec. How much charge will pass when the coil is connected to a galvanometer with a combined resistance of 50 ohms

  ---