The capacitor of capacitance 4μF and 6 μF are connected in series. A potential difference of 500 volts applied to the outer plates of the two capacitor system. Then the charge on each capacitor is numerically
|
(a) 6000 C |
(b) 1200 C |
(c) 1200 μC |
(d) 6000 μC |
(c) 1200 μC
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r from its centre
|
(a) Increases as r increases for r < R |
(b) Decreases as r increases for 0 < r < ∞ |
|
(c) Decreases as r increases for R < r < ∞ |
(d) a, c |
Wavefront of a wave has direction with wave motion
|
(a) Parallel |
(b) Perpendicular |
(c) Opposite |
(d) At an angle of 𝜃 |
An arbitrary shaped closed coil is made of a wire of length L and a current I ampere is flowing in it. If the plane of the coil is perpendicular to magnetic field 
, the force on the coil is
|
(a) Zero |
(b) IBL |
(c) 2IBL |
(d) |
The relative permeability (
of a ferromagnetic substance varies with temperature (T) according to the curve
|
(a) A |
(b) B |
(c) C |
(d) D |
In the middle of the depletion layer of a reverse-biased PN junction, the
|
(a) Potential is zero |
(b) Electric field is zero |
|
(c) Potential is maximum |
(d) Electric field is maximum |
Assertion : The ion cannot move with a speed beyond a certain limit in a cyclotron.
Reason : As velocity increases time taken by ion increases.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
