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In a tangent galvanometer a current of 0.1 A produces a deflection of 30o. The current required to produce a deflection of 60o is
|
(a) 0.2 A |
(b) 0.3 A |
(c) 0.4 A |
(c) 0.5 A |
The energy stored in a condenser of capacity C which has been raised to a potential V is given by
|
(a) |
(b) |
(c) CV |
(d) |
The plates of a parallel plate condenser are pulled apart with a velocity v. If at any instant their mutual distance of separation is d, then the magnitude of the time of rate of change of capacity depends on d as follows
|
(a) |
(b) |
(c) |
(d) d |
In an adjoining figure are shown three capacitors 
and 
joined to a battery. The correct condition will be (Symbols have their usual meanings)
|
(a) |
(b) |
|
(c) |
(d) |
The angle of dip at a place on the earth gives
|
(a) The horizontal component of the earth's magnetic field |
| (b) The location of the geographic meridian |
|
(c) The vertical component of the earth's field |
|
(d) The direction of the earth's magnetic field |
