A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be nearly______________?

Related Mcqs:

1. Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla

   A. 100 N B. 400 N C. 600 N D. 1000 N...

2. A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be____________?

   A. 10 V B. 15 V C. 25V D. 50V...

3. An electric current induced within the body of a conductor when that conductor either moves through a non uniform magnetic field or in a region where there is a change in magnetic flux is called_____________?

   A. Induced current B. Eddy current C. Back emf D. None of the above...

4. Lagging of changes in the magnetization of a substance behind changes in the magnetic field as the magnetic field is varied is known as magnetic_____________?

   A. Retaintivity B. Permeability C. Flux D. Hysteresis...

5. Which of the following works on torque on the current carrying conductor placed in magnetic field ?

   A. galvanometer B. ammeter C. voltmeter D. all of the above...

6. The emf induced in a conductor of unit length moving with unit velocity at right angles to a magnetic field is equal to_____________?

   A. Magnetic flux density B. Torque C. Mutual induction D. Motional emf...

7. Reversing the field or the current will reverse the force on the conductor

   A. Yes B. No...

8. Current produced by moving the loop of wire across a magnetic field is called_____________?

   A. A.C current B. D.C current C. induced current D. mean square current...

9. An aeroplane of wingspan 10m flies from the equator towards the North Pole. The wings are perpendicular to the vertical component of the earths magnetic field (B = 4×10-5T). At maximum speed an emf of 96mV is induced across the wing tips. The maximum speed of the aeroplane is____________?

   A. 150msec-1 B. 384msec-1 C. 38.4msec-1 D. 200msec-1...

10. Energy stored in a magnetic field is given by______________?

    A. LI2 B. L2I/2 C. LI2/2 D. IL2...