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प्रश्न
What do you understand by the resistance of a wire?
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उत्तर
The obstruction offered in the flow of electrons (or current) by the material of the wire, is called its resistance.
संबंधित प्रश्न
How much work is done in moving a charge of 2 C across two points having a potential difference of 12 V?
What p.d. is needed to send a current of 6 A through an electrical appliance having a resistance of 40 Ω?
Which one of the following is the correct set-up for studying the dependence of the current on the potential difference across a resistor and why?
A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is:
100 J of heat is produced each second in a 4 Ω resistor. The potential difference across the resistor will be:
A cylindrical conductor of length l and uniform area of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.
How will you conclude that the same potential difference (voltage) exists across three resistors connected in a parallel arrangement to a battery?
Define Electric potential.
Inside a hollow charged spherical conductor, the potential ______
What does the positive and negative sign of potential convey?
