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प्रश्न
How is the electric potential difference between the two points defined? State its S.I. unit.
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उत्तर
The potential difference between two points is equal to the work done in moving a unit positive charge from one point to the other.
It's S.I. unit is Volt.
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संबंधित प्रश्न
A battery of emf 12 V and internal resistance 2 Ω is connected with two resistors A and B of resistance 4 Ω and 6 Ω respectively joined in series.
Find:
1) Current in the circuit
2) The terminal voltage of the cell
3) The potential difference across 6Ω Resistor
4) Electrical energy spent per minute in the 4Ω resistor.
What is the potential difference between the terminals of a battery if 250 joules of work is required to transfer 20 coulombs of charge from one terminal of battery to the other?
What is a voltmeter?
Keeping the potential difference constant, the resistance of a circuit is halved. By how much does the current change?
What is the ratio of potential difference and current known as?
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?
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.
Explain the statement ‘the potential difference between two points is 1 volt’.
Calculate the current flowing through each of the resistors A and B in the circuit shown in the following figure.
Write an expression for the electrical power spent in flow of current through a conductor in terms of resistance and potential difference.
