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प्रश्न
Name the material which is the best conductor of electricity.
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उत्तर
Silver is the best conductor of electricity.
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संबंधित प्रश्न
Find the equivalent resistance between points A and B.
When a 4 Ω resistor is connected across the terminals of a 12 V battery, the number of coulombs passing through the resistor per second is:
(a) 0.3
(b) 3
(c) 4
(d) 12
How does the resistance of a wire change when:
its length is tripled?
Give the law of combination of resistances in series.
What possible values of resultant resistance one can get by combining two resistances, one of value 2 ohm and the other 6 ohm?
The diagram below shows part of a circuit:
If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:
(a) 9 Ω
(b) 4 Ω
(c) 6 Ω
(d) 18 Ω
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Choose the correct alternative and rewrite the following:
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State expression for Resistance connected in parallel.
State expression for Cells connected in parallel.
Calculate the equivalent resistance between the points A and B for the following combination of resistors:
Four resistances of 2.0Ω each are joined end to end, to form a square ABCD. Calculate the equivalent resistance of the combination between any two adjacent comers.
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In the circuit shown below, calculate the equivalent resistance between the points (i) A and B, (ii) C and D.
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:
Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of 4 Ω.
