- AAc only
- BDc only
- CEither ac or dc
- DNeither dc nor ac
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A current carrying small loop behaves like a small magnet. If A be its area and M its magnetic moment, the current in the loop will be
|
(a) M/A |
(b) AIM |
(c) MA |
(d) |
No current flows between two charged bodies connected together when they have the same
|
(a) Capacitance or |
(b) Charge |
|
(c) Resistance |
(d) Potential or |
Thermal neutrons are those which
|
(a) Are at very high temperature |
|
(b) Move with high velocities |
|
(c) Have kinetic energies similar to those of surrounding molecules |
|
(d) Are at rest |
The magnetic susceptibility of any paramagnetic material changes with absolute temperature T as
|
(a) Directly proportional to T |
(b) Remains constant |
|
(c) Inversely proportional to T |
(d) Exponentially decaying with T |
A circular coil of radius 5 cm has 500 turns of a wire. The approximate value of the coefficient of self induction of the coil will be
|
(a) 25 millihenry |
(b) 25 |
|
(c) 50 |
(d) 50 |