- APositive
- BNegative
- CZero
- DDepends on the field direction
Explanation:
Work done is given difference in potentials. In an equipotential surface, all points will have same potential. Thus work done is zero
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$\lambda_\text{e}=\lambda_\text{p}.$
$\lambda_\text{e}<\lambda_\text{p}.$
$\lambda _\text{e}>\lambda_\text{p}.$
The relation between
A small coil of N turns has area A and a current I flows through it. The magnetic dipole moment of this coil will be
|
(a) NI/A |
(b) |
(c) |
(d) NIA |
Velocity of light in glass whose refractive index with respect to air is 1.5 is 2 × 108 m/s and in certain liquid the velocity of light found to be 2.5 × 108 m/s. The refractive index of the liquid with respect to air is
|
(a) 0.64 |
(b) 0.80 |
(c) 1.20 |
(d) 1.44 |