A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards
|
(a) North |
(b) South |
(c) East |
(d) West |
(d) West
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If 
in the given figure, then resistance X will be
|
(a) 5Ω |
(b) 10 Ω |
(c) 15 Ω |
(d) 20 Ω |
How much kinetic energy will be gained by an α - particle in going from a point at 70 V to another point at 50 V
|
(a) 40 eV |
(b) 40 keV |
(c) 40 MeV |
(d) 0 eV |
The resistance of a metal wire increases with increasing temperature on account of:
A capacitor is fully charged with a battery. Then the battery is removed and coil is connected with the capacitor in parallel, current varies as
|
(a) Increases monotonically |
(b) Decreases monotonically |
|
(c) Zero |
(d) Oscillates indefinitely |