Question 292: Current Electricity

Question

In the circuit shown, the potential difference between A and B is :

Accepted Answer

Potential difference across AB will  be equal to battery equivalent across CD
V
AB
$$=$$ V
CD
$$=$$ $${{{{{E_1}} \over {{r_1}}} + {{{E_2}} \over {{r_2}}} + {{{E_3}} \over {{r_3}}}} \over {{1 \over {{r_1}}} + {1 \over {{r_2}}} + {1 \over {{r_3}}}}} = {{{1 \over 1} + {2 \over 1} + {3 \over 1}} \over {{1 \over 1} + {1 \over 1} + {1 \over 1}}}$$
$$=$$ $${6 \over 3}$$ $$=$$ 2V

Answer

6 V

Answer

3 V

Answer

2 V

Answer

1 V

Current Electricity

In the circuit shown, the potential difference between A and B is :

Choose the correct answer: