ElectroMagnetic InductionHard
Question
Figure shows a conducting disc rotating about its axis in a perpendicular magnetic field B. A resistor of resistance R is connected between the centre and the rim. The radius of the disc is 5.0 cm, angular speed ω = 40 rad/s, B = 0.10 T and R = 1 Ω. The current through the resistor is
Options
A.5 mA
B.50 A
C.5 A
D.10 mA
= 
. = 5mAMore ElectroMagnetic Induction Questions
In the figure shown a square loop PQRS of side ′a′ and resistance ′r′ is placed in near an infin...The radius of a coil decreases steadily at the rate of 10-2 m/s. A constant and uniform magnetic field of in-duction 10-...Two identical conductors of copper and aluminimum are placed in an identical electric field What is the magnitude of ind...An inductance L and a resistance R are joined to a battery. After some time, battery is disconnected but L and R remains...Figure shows a square loop of side 1 m and resistance 1 Ω. The magnetic field on left side of line PQ has a magnitu...