Reversing the field or the current will reverse the force on the conductor
Reversing the field or the current will reverse the force on the conductor
A. Yes
B. No
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In case all the flux from the current in coil 1 links with coil 2, the co-efficient of coupling will be____________?
In case all the flux from the current in coil 1 links with coil 2, the co-efficient of coupling will be____________?A. 2.0
B. 1.0
C. 0.5
D. zeroCurrent changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is___________?
Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is___________?A. 5 mH
B. 10 mH
C. 5 H
D. 10 HAn alternating current or voltage________________?
An alternating current or voltage________________?A. fluctuates off and on
B. varies in magnitude alone
C. changes its direction again and again
D. changes its magnitude continuously and reverses its direction of flow after regularly recurring intervals.Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be_____________?
Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be_____________?A. unaffected
B. doubled
C. halved
D. quadrupledA metal rod of 25 cm length is moving at a speed of 0.5/sec in direction perpendicular to 0.25T magnetic field. Emf produced in the rod is_____________?
A metal rod of 25 cm length is moving at a speed of 0.5/sec in direction perpendicular to 0.25T magnetic field. Emf produced in the rod is_____________?A. 0 volt
B. 3.125 volt
C. 31.25 volt
D. 0.03125 voltWhich circuit element(s) will oppose the change in circuit current ?
Which circuit element(s) will oppose the change in circuit current ?A. Resistance only
B. Inductance only
C. Capacitance only
D. Inductance and capacitance