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प्रश्न
Define electric potential and potential difference.
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उत्तर
- Electric Potential: The electric potential at a point is defined as the amount of work done in moving a unit positive charge from infinity to that point against the electric force.
- Electric Potential Difference: The electric potential difference between two points is defined as the amount of work done in moving a unit positive charge from one point to another point against the electric force.
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संबंधित प्रश्न
The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below:
| I (amperes) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volts) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
Plot a graph between V and I and calculate the resistance of that resistor.
What is a voltmeter?
Calculate the power used in the 2 Ω resistor in each of the following circuits: a 6 V battery in series with 1 Ω and 2 Ω resistors.
Write an expression for the electrical power spent in flow of current through a conductor in terms of resistance and potential difference.
Point out two differences between e.m.f. and potential difference as applied to electric circuits.
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An electric bulb draws 0.5 A current at 3.0 V. Calculate the resistance of the filament of the bulb.
A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is:
Electric potential is a ____________.
