Which curve may best represent the current deflection in a tangent galvanometer
|
(a) A |
(b) B |
(c) C |
(d) D |
Which curve may best represent the current deflection in a tangent galvanometer
|
(a) A |
(b) B |
(c) C |
(d) D |
(b) B
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A sinusoidal voltage of peak value 200 volt is connected to a diode and resistor R in the circuit shown so that half wave rectification occurs. If the forward resistance of the diode is negligible compared to R the rms voltage (in volt) across R is approximately

|
(a) 200 |
(b) 100 |
(c) |
(d) 280 |
The potential at a point, due to a positive charge of 100μC at a distance of 9m, is
|
(a) |
(b) |
(c) |
(d) |
A pendulum bob of mass 30.7
and carrying a charge
is at rest in a horizontal uniform electric field of 20000 V/m. The tension in the thread of the pendulum is (g = 9.8
|
(a) 3 |
(b) 4 |
(c) 5 |
(d) 6 |

The mean electric energy density between the plates of a charged capacitor is (here q = charge on the capacitor and A = area of the capacitor plate)
|
(a) |
(b) |
(c) |
(d) None of the above |