Explanation:
Charge remains on the outer surface of a conductor, irrespective of the shape and size of the conductor and also for hollow and solid conductors both. But if there is a sharp edge in the conductor, surface charge density will be more at that point. The surface charge density is uniform in the case of a sphere.
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What will be the colour of sky as seen from the earth, if there were no atmosphere
|
(a) Black |
(b) Blue |
(c) Orange |
(d) Red |
Which of the following gives the value of magnetic field according to, Biot-Savart’s law’
|
(a) |
(b) |
(c) |
(d) |
Kirchhoff's second law is based on the law of conservation of
|
(a) Charge |
(b) Energy |
|
(c) Momentum |
(d) Sum of mass and energy |
A coil of inductance 8.4 mH and resistance 6 W is connected to a 12 V battery. The current in the coil is 1.0 A at approximately the time
|
(a) 500 sec |
(b) 20 sec |
(c) 35 milli sec |
(d) 1 milli sec |
A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge – Q. The surface charge density on the inner and outer surfaces of the spherical shell will be
|
(a) |
(b) |
(c) 0, |
(d) None of the above |
The use of study of hysteresis curve for a given material is to estimate the
|
(a) Voltage loss |
(b) Hysteresis loss |
(c) Current loss |
(d) All of these |
