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Answer:
Name a device that helps to maintain a potential difference across a conductor.
Potential difference can be defined as the difference in energy that charge carriers have between two points in a circuit. The potential difference (p.d.) is measured in volts (V) and is also known as voltage. The potential difference between any two points is defined as the amount of work done in moving a unit charge from one point to another
The device that helps to maintain a potential difference
Any source of electricity like the battery or cell helps to maintain a potential difference across a conductor. A cell is a single unit device that converts chemical energy into electric energy. A Battery is a device consisting of one or more electrical cells that convert chemical energy into electrical energy. A battery usually consists of a group of cells.
What is meant by saying that the potential difference between two points is 1 V?
If 1 J of work is required to move a charge of amount 1 C from one point to another, then it is said that the potential difference between the two points is 1 V.
Potential difference
Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit. The potential difference between two points in an electric field is the amount of work done to move a unit charge from one point to another. The electric potential difference is the difference in electric potential (V) between the final and the initial location when work is done upon a charge to change its potential energy.
Potential difference (V) is measured in volts (V) energy (E) is measured in joules (J)
How much energy is given to each coulomb of charge passing through a 6 V battery?
Given that
Charge,q = 1 C
Potential difference V = 6 v
To find out
We need to find the energy given to each coulomb of charge passing through a 6 V battery.
Solution
Principle of conservation of energy
From the principle of conservation of energy, we know that the system’s work is equal to the energy supplied to that system.
The energy given to each coulomb of charge is equal to the amount of work required to move it.
Formula
Potential difference (V)= Work done (W) / Charge (q)
On rearranging the above formula, we get
Work done (W) = Potential difference X Charge
Put the value of V and q in the above equation, we get
Work done (w) = 6 X 1
Work done = 6 Joules
Therefore, the energy is given to each coulomb of charge passing through a 6 v battery is 6 J.
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