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Electric Potential at a Point in Space Due to a Point Charge Q

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Why potential difference is different in series combination and same in parallel combination?

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Q. Two equal resistors are first connected in series and then in parallel in a circuit across same potential difference. The ratio of their power in series and parallel combination will be:

Q. Two condensers are in parallel and the energy of the combination is 0.1 J, when the difference of potential between terminals is 2 V. With the same two condensers in series, the energy is

1.6 \times 10^{- 2}

J for the same difference of potential across the series combination. What are the capacities?

Q. Two capacitors of

3 μ F

6 μ F

are connected in series and a potential difference of

900 V

is applied across the combination. They are then disconnected and reconnected in parallel. The potential difference across the combination is

Q. (a) Define potential difference?
(b) State joules law of heating?
(c) Two conducting wires of same material and of equal lengths and equal diameters are first connected in series and then in parallel in circuit across the same potential difference. What is the ratio of heat produced in series and parallel combination?

Q. A series combination of

N_{1}

capacitors (each of capacity

C_{1}

) is charged to potential difference

^{'} 3 V^{'}

. Another parallel combination of

N_{2}

capacitors (each of capacity

C_{2}

) is charged to potential difference 'V'. The total energy stored in both the combinations is same. The value of

C_{1}

C_{2}

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Electric Potential at a Point in Space Due to a Point Charge Q

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