- AThe number of turns in the coil
- BThe resistance of the coil
- CThe speed of approach of the magnet
- DAll the above
Explanation:
The induced emf produced when a magnet is inserted into a coil does not depend upon the resistance of the coil.
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For a real object, which of the following can produced a real image
|
(a) Plane mirror |
(b) Concave lens |
(c) Convex mirror |
(d) Concave mirror |
A long solenoid has n turns per meter and current I A is flowing through it. The magnetic field at the ends of the solenoid is
|
(a) |
(b) |
(c) Zero |
(d) 2 |
$\lambda_\text{e}=\lambda_\text{p}.$
$\lambda_\text{e}<\lambda_\text{p}.$
$\lambda _\text{e}>\lambda_\text{p}.$
The relation between
A galvanometer whose resistance is 120 Ω gives full scale deflection with a current of 0.05 A so that it can read a maximum current of 10 A. A shunt resistance is added in parallel with it. The resistance of the ammeter so formed is
|
(a) 0.06 Ω |
(b) 0.006 Ω |
(c) 0.6 Ω |
(d) 6 Ω s |
Kirchhoff's second law is based on the law of conservation of
|
(a) Charge |
(b) Energy |
|
(c) Momentum |
(d) Sum of mass and energy |
Which is the correct relation for forbidden energy gap in conductor, semi conductor and insulator
|
(a) |
|
(b) |
|
(c) |
|
(d) |