Advertisements
Advertisements
Question
How is potential difference related to work done and quantity of charge?
Advertisements
Solution
If Q = Charge moving from one point to another in an electric field.
W = Work done to move the charge Q from one point to another.
V = Potential difference between two points.
Then work done in moving Q units of charge = W
Work done in moving one unit of charge = `"W"/"Q"`
But work done in moving one unit of charge = Potential difference = V
⇒ V = `"W"/"Q"`
APPEARS IN
RELATED QUESTIONS
What transformation of energy takes place when current is drawn from a cell?
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
State and define the S.I. unit of potential difference.
What is the electrical potential at a point in an electric field when 24 J of work is done in moving a charge of 96 C from infinity?
State two characteristics of resistance in the parallel circuit.
Draw a diagram showing two bulbs connected in parallel to a dry cell.
What is the other name of a variable resistor?
'The resistance of a wire is 2 ohm'. Explain the meaning of this statement.
