Advertisements
Advertisements
प्रश्न
How is the electric potential difference between the two points defined? State its S.I. unit.
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.
APPEARS IN
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?
The device used for measuring potential difference is known as:
Keeping the resistance constant, the potential difference applied across the ends of a component is halved. By how much does the current change?
Keeping the potential difference constant, the resistance of a circuit is doubled. By how much does the current change?
In the circuit shown below:
The potential difference across the 3 Ω resistor is:
Calculate the current flowing through each of the resistors A and B in the circuit shown in the following figure.
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.
Twenty-seven drops of the same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.
