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प्रश्न
Define the unit of resistance (or Define the unit "ohm").
उत्तर
One ohm (Ω) is the resistance of a conductor when a potential difference of one volt is applied to its ends and a current of one ampere flows through it.
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संबंधित प्रश्न
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a charge of 1 C passes through it?
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Write an expression for the electrical power spent in flow of current through a conductor in terms of current and resistance.
From the following observations taken while determining the resistance of a conductor, draw the current-voltage graph and calculate the resistance of conductor. Is the conductor ohmic?
| Ammeter reading I (in ampere) | Voltmeter reading V (in volt) |
| 0.2 | 0.4 |
| 0.3 | 0.6 |
| 0.5 | 1.0 |
| 0.8 | 1.6 |
| 1.5 | 3.0 |
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Calculate:
(i) the total resistance in the circuit
(ii) the total current flowing in the circuit.
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(iii) Calculate the power dissipated in the 3 Ω resistor.
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Now if a resistance of 10 Ω is connected in parallel with this series combination, what change (if any) in current flowing through 5 Ω conductor and potential difference across the lamp will take place? Give reason.
The SI unit of potential difference is ______.
Inside a hollow charged spherical conductor, the potential ______
