- AZero
- BForce a proton would experience there.
- CForce an electron would experience there.
- DForce a unit positive charge would experience there.
Explanation:
The electric field intensity at a point in a vacuum is equal to force experienced by a unit positive charge placed at that point.
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A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the axis of the loop is
|
(a) An end-on position |
(b) A broad side-on position |
|
(c) Both (a) and (b) |
(d) Neither (a) nor (b) |
A 100 ohm galvanometer gives full scale deflection at 10 mA. How much shunt is required to read 100 mA
|
(a) 11.11 ohm |
(b) 9.9 ohm |
(c) 1.1 ohm |
(d) 4.4 ohm |
The relative permeability is represented by mr and the susceptibility is denoted by c for a magnetic substance. Then for a paramagnetic substance
|
(a) mr < 1, c < 0 |
(b) mr < 1, c > 0 |
(c) mr > 1, c < 0 |
(d) mr > 1, c > 0 |
An infinite ladder network is arranged with resistances R and 2 R as shown. The effective resistance between terminals A and B is
|
(a) ∞ |
(b) R |
(c) 2 R |
(d) 3 R |
$\vec{\text{v}},\ \vec{\text{v}}_1$ and $\vec{\text{v}}_2$ must be parallel to each other.
$\vec{\text{v}}_1+\vec{\text{v}}_2$ must be parallel to $\vec{\text{v}}.$
$\text{m}_1\vec{\text{v}}_1+\text{m}_2\vec{\text{v}}_2$ must be parallel to $\vec{\text{v}}.$
The wavelength of Lyman series is
|
(a) |
(b) |
(c) |
(d) |