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(chatquestion)...done in rotating the cos by
op the needle in the displaced postion
(3) 2
(2) J3w
(4) W
A current i, is flowing through an L-R circuit of time constant t The source of current is switched off at time
t= 0. Let r be the value of (-di/dt) at time t=0, Assuming this rate to be constant, the current wll reduce to zerO
in a time interval of
Q.75
[1] to
[2] et,
[4]
Q.76
A conducting rod AB of length /= 1 m is moving at a velocity v = 4 m/s making an angle 30 vth tn kannn
uniform magnetic field B = 2T exists in a direction perpendiuclar to the plane of motion. Then
C-C
X X X X X
[4] V-V=4V
[3] Ve-VA= 8V
[2] VA- Vg = 4 V
[1]V- Ve = 8V
In the circuit shown in fig. The jockey J is being pulled towards right so that the resistance in the circitis
increasing. Its value at some instant is 5 Q. The current in the circuit at this instant will be
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[2] less than 4 A
[114 A
[4] may be less than or more than 4 A depending on the value of L
ntont volocihuyout of a uniform
[3] more than 4 A
...
