What is induced Emf?...

What is induced Emf?

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Change in magnetic flux produces emf in the circuit called induced emf.

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Following figure shows a metal rod PQ resting on the smooth ralls AH and positioned between the poles of a permanent magnet. The rails, the rod and the magnetic field are in three mutual perpendicular directions. A galvanometer G connects the rails through a switch K. Length of the rod 15 cm, B 0.50 T, resistance of the closed loop containing the rod 9.0 mOmega . Assume the field to be uniform. What is the induced emf in the moving rod if the magnetic field is parallel to the rails instead of being perpendicular?

What is the basic cause of induced emf?

A tong solenoid with 15 turns per em has a small loop of area 2.0 cm^(2) placed inside the solenoid normal to its axis, If the current carried by the solenoid changes steadily from 2.0 A to 4.0 A in 0.1 s, what is the inducced emf in the loop while the current is changing?

The following statement was read by Saritha. The induced emf in a coil is independent of the resistance of the coil. How you will verify and prove the above statement is true ?

A wheel with 10 metallic spokes each 0.5 m long is rotated with a speed of 120 rev/min in a plane normal to the horizontal component of earth's magnetic field H_E at a place. If H_E 0.4 G at the place, what is the induced emf between the axle and the rim of the wheel ? Note that 1G =10^(-4)T.

The magnetic flux threading a coil changes from 12 xx 10^(-3) Wb " to " 6 xx 10^(-3) Wb "in " 0.01 sec. Calculate the induced emf.

VGS PUBLICATION-BRILLIANT-ELECTROMAGNETISM-CREATIVE QUESTION FOR NEW MODEL EXAMINATION (SEC-2) CONCEPTUAL UNDERSTANDING

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