Current Electricity

Related Questions

• Two electric bulbs, one of 200 volt 40 watt and the other 200 volt 100 watt are connected in a house wiring circuit

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• Four wires of equal length and of resistances 10 ohms each are connected in the form of a square. The equivalent resistance between two opposite corners of the square is

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• Two batteries of e.m.f. 4V and 8 V with internal resistances $1 \Omega$ and $2 \Omega$ are connected in a circuit with a resistance of $9 \Omega$ as shown in figure. The current and potential difference between the points P and Q are

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• The e.m.f. of a cell is E volts and internal resistance is $r$ohm. The resistance in external circuit is also$r$ohm. The p.d. across the cell will be

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• On increasing the temperature of a conductor, its resistance increases because

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