Calculate the charge on equivalent capacitance of the conbination shown in figure between the points P and N
Options
(a) 450 μC (b) 225 μC (c) 350 μC (d) 900 μC
Correct Answer: […]
The electric field in a certain region is acting radially outward and is given by E=Ar. A charge contained in a sphere of radius a centred at the origin of the field will be given […]
A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now placed inside another hollow spherical conductor of radius 6 m. Calculate the potential to which the bigger […]
An electric dipole is placed at an angle 30°with an electric field intensity 2×10⁵N/C. It experiences a torque equal to 4N-m. The charge on the dipole, if the dipole length is 2cm is,
Options […]
A condenser of capacity C is charged to a potential difference of V₁. The plates of the condenser are then connected to an ideal inductor of inductance L. The current through the inductor when the […]
A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric flux will
Options
(a) increase four times (b) be reduced to […]
A charge of 100 μC has a potential at a distance of 9 m is
Options
(a) 10⁶ V (b) 10⁻⁵ V (c) 10⁵ V (d) 10⁻⁶ V
Correct Answer:
10⁵ V
Explanation: […]
A hollow sphere of charge does not produce an electric field at any
Options
(a) Point beyond 2 metres (b) Point beyond 10 metres (c) Interior points (d) Outer points
Correct Answer:
Interior […]
A capacitor of capacitance value 1 μF is charged to 30 V and the battery is then disconnected. If it is connected across a 2 μF capacitor, the energy lost by the system is
A hollow metal sphere of radius 10 cm is charged such that the potential on its surface is 80V. The potential at the centre of the sphere is
Options
(a) zero (b) 80 […]
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