How is the electric potential difference between two points defined ? State its S.I. unit.

The potential difference between points A and B is

The potential difference between points A and B is

The potential difference between points A and B is

What is heat ? State its S.I. unit

Define velocity. State its S.I. unit.

Define heat with its S.I Unit

Explain the statement 'the potential difference between two points is 1 volt'.

Define upthrust and state its S.I. unit.

In the diagram shown find the potential difference between the points A and B and between the points B and C in the steady state.

Name an instrument that measures potential difference between two points in a circuit. Difine the unit of potential difference in terms of SI unit of charge and work . Draw the circuit symbols for a (i) veribale resisitor , (ii) a plug key which is closed one . Two electric circutirs I and II are shown below. (i) Which of the two circuits has more resistance? (ii) Through which circuit more current passes? (iii) In which circuit, the potential difference across each resistor is equal? (iv) If R_(1) gt R_(2) gtR_(3) , in which circuit more heat will be produced in R_(1) as compared to other two resistors? .