The equivalent resistance and potential difference between A and B for the circuit is respectively
|
(a) 4 W, 8 V |
(b) 8 W, 4 V |
(c) 2 W, 2 V |
(d) 16 W, 8 V |
(a) 4 W, 8 V
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An ideal coil of 10 henry is joined in series with a resistance of 5 ohm and a battery of 5 volt. 2 second after joining, the current flowing in ampere in the circuit will be
|
(a) |
(b) |
(c) (1 – e) |
(d) e |
In the circuit shown in figure reading of voltmeter is V1 when only S1 is closed, reading of voltmeter is V2 when only S2 is closed and reading of voltmeter is V3 when both S1 and S2 are closed. Then
|
(a) V3 > V2 > V1 |
(b) V2 > V1 > V3 |
(c) V3 > V1 > V2 |
(d) V1 > V2 > V3 |
A horizontal rod of mass 10 gm and length 10 cm is placed on a smooth plane inclined at an angle of 60° with the horizontal, with the length of the rod parallel to the edge of the inclined plane. A uniform magnetic field of induction B is applied vertically downwards. If the current through the rod is 1.73 ampere, then the value of B for which the rod remains stationary on the inclined plane is
|
(a) 1.73 Tesla |
(b) |
(c) 1 Tesla |
(d) None of the above |
What is the coefficient of mutual inductance when the magnetic flux changes by 2 
and change in current is 0.01A
|
(a) 2 henry |
(b) 3 henry |
(c) |
(d) Zero |
