Current Electricity

Related Questions

• The potential difference in open circuit for a cell is 2.2 volts. When a 4 ohm resistor is connected between its two electrodes the potential difference becomes 2 volts. The internal resistance of the cell will be

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• 100 cells each of e.m.f. 5 V and internal resistance 1 ohm are to be arranged so as to produce maximum current in a 25 ohms resistance. Each row is to contain equal number of cells. The number of rows should be

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• In the circuit shown in figure, the current drawn from the battery is 4A. If $10 \Omega$ resistor is replaced by $20 \Omega$ resistor, then current drawn from the circuit will be

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• A 60 watt bulb operates on 220V supply. The current flowing through the bulb is

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• The lowest resistance which can be obtained by connecting 10 resistors each of 1/10 ohm is

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