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प्रश्न
Potential difference is measured in _________ by using a ___________ placed in ___________ across a component.
उत्तर
Potential difference is measured in volts by using a voltmeter placed in parallel across a component.
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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 do the letters p.d. stand for?
What p.d. is needed to send a current of 6 A through an electrical appliance having a resistance of 40 Ω?
The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below:
| Potential differences, V (in volts) | : | 2.5 | 5.0 | 10.0 | 15.0 | 20.0 | 25.0 |
| Current, I (in amperes) | : | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 1.0 |
Explain the statement ‘the potential difference between two points is 1 volt’.
Explain why potential difference is always less than the e.m.f. of a cell?
Five resistors of different resistances are connected together as shown in the figure. A 12 V battery is connected to the arrangement.
Calculate:
(i) the total resistance in the circuit
(ii) the total current flowing in the circuit.
A current of 0.2 A flows through a conducting wire for 5 minutes. How much charge will flow?
A 10 m long wire of a particular material is of reistance 5Ω What will be the resistance of 5m long wire of same material and the same thickness.
Define Electric potential.
