- AParamagnetic
- BDiamagnetic
- ✓Ferromagnetic
- DNon-magnetic
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A source voltage of 8V drives the diode in fig. through a current-limiting resistor of 100 ohm. Then the magnitude of the slope load line on the V-I characteristics of the diode is
|
(a) 0.01 |
(b) 100 |
(c) 0.08 |
(d) 12.5 |
The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be
|
(a) Horizontal |
(b) Vertical |
(c) Clockwise |
(d) Anticlockwise |
The dimension of the magnetic field intensity B is
|
(a) |
(b) |
(c) |
(d) |
The internal resistances of two cells shown are 0.1 Ω and 0.3 Ω. If R = 0.2 Ω, the potential difference across the cell
|
(a) B will be zero |
(b) A will be zero |
|
(c) A and B will be 2V |
(d) A will be > 2V and B will be < 2V |
In the given figure, equivalent resistance between A and B will be
|
(a) |
(b) |
(c) |
(d) |
A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium, if q is equal to
|
(a) |
(b) |
(b) |
(d) |
The strength of the magnetic field in which the magnet of a vibration magnetometer is oscillating is increased 4 times its original value. The frequency of oscillation would then become
| (a) Twice its original value | (b) Four times its original value |
| (c) Half its original value | (d) One-fourth its original value |