Explanation:
Charge remains on the outer surface of a conductor, irrespective of the shape and size of the conductor and also for hollow and solid conductors both. But if there is a sharp edge in the conductor, surface charge density will be more at that point. The surface charge density is uniform in the case of a sphere.
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What is the equivalent resistance between A and B in the figure below if R = 3Ω
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(a) 9 Ω |
(b) 12 Ω |
(c) 15 Ω |
(d) None of these |
For the circuit shown, which of the following statements is true
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(a) With |
|
(b) With |
|
(c) With |
|
(d) With |
A magnet is placed in iron powder and then taken out, then maximum iron powder is at
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(a) Some away from north pole |
(b) Some away from south pole |
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(c) The middle of the magnet |
(d) The end of the magnet |
In the circuit shown in the figure, the current flowing in 2 Ω resistance
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(a) 1.4 A |
(b) 1.2 A |
(c) 0.4 A |
(d) 1.0 A |
The tangent galvanometer, when connected in series with a standard resistance can be used as
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(a) An ammeter |
(b) A voltmeter |
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(c) A wattmeter |
(d) Both an ammeter and a voltmeter |
$\lambda\geq\lambda_0$
$\lambda\geq2\lambda_0$
$\lambda\leq\lambda_0$
$\lambda<\frac{\lambda_ 0}{2}.$
