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प्रश्न
What is the SI unit of potential difference?
उत्तर
The SI unit of potential difference is volt and is denoted by the letter, V.
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संबंधित प्रश्न
How is a voltmeter connected in the circuit to measure the potential difference between two points? Explain with the help of a diagram.
The other name of potential difference is:
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 |
For the circuit shown in the diagram below:
What is the value of:
(i) current through 6 Ω resistor?
(ii) potential difference across 12 Ω resistor?
Explain the analogy between the flow of charge (or current) in a conductor under a potential difference with the free fall of a body under gravity.
A current of 1.6 mA flows through a conductor. If charge on an electron is –1.6 × 10-19 coulomb, find the number of electrons that will pass each second through the cross section of that conductor.
Three resistors are connected to a 6 V battery as shown in the figure given below:
Calculate:
(i) the equivalent resistance of the circuit.
(ii) total current in the circuit.
(iii) potential difference across the 7.2 Ω resistor.
A boy records that 4000 joules of work are required to transfer 10 coulombs of charge between two points of a resistor of 50 Ω. The current passing through it is:
How will you conclude that the same potential difference (voltage) exists across three resistors connected in a parallel arrangement to a battery?
