Unanswered Electro Magnetic Induction Questions

A uniform but time-varying magnetic field B(t) exists in a circular region of radius a and is directed into the plane of the paper, as shown. The magnitude of the induced electric field at point P at a distance r from the cen ...

A rectangular loop with a sliding connector of length l = 1.0 m is situated in a uniform magnetic field B = 2T perpendicular to the plane of loop. Resistance of connector is r = 2W. Two resistance of 6W and 3W are connected a ...

The spokes of a wheel are made of metal and their lengths are of one metre. On rotating the wheel about its own axis in a uniform magnetic field of 5 × 10–5 Tesla normal to the plane of wheel, a potential difference of 3.1 ...

An LR circuit with a battery is connected at t =0. Which of the following quantities is not zero just after the connection ? ...

An inductor coil stores energy U when a current i is passed through it and dissipates energy at the rate of P. The time constant of the circuit when this coil is connected across a battery of zero internal resistance is ...

Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response the loop B ...

Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shows in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v *Image* ...

In a series L–R growth circuit, if maximum current and maximum induced emf in an inductor of inductance 3mH are 2A and 6V respectively, then the time constant of the circuit is ...

A coil of area A = 0.5 m2 is situated in a uniform magnetic field B = 4.0 wb/m2 and area vector makes an angle of 60o with respect to the magnetic field as shown in figure. The value of the magnetic flux through the area A wo ...