Current Electricity

Related Questions

• In the circuit shown here, what is the value of the unknown resistor R so that the total resistance of the circuit between points P and Q is also equal to R

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• A 2 volt battery, a $15\,\Omega $ resistor and a potentiometer of 100 cm length, all are connected in series. If the resistance of potentiometer wire is$5\,\Omega $, then the potential gradient of the potentiometer wire is

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• A galvanometer of 10 ohm resistance gives full scale deflection with 0.01 ampere of current. It is to be converted into an ammeter for measuring 10 ampere current. The value of shunt resistance required will be

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• The n rows each containing m cells in series are joined in parallel. Maximum current is taken from this combination across an external resistance of $3 \Omega$ resistance. If the total number of cells used are 24 and internal resistance of each cell is $0.5 \Omega$ then

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• A 25 watt, 220 volt bulb and a 100 watt, 220 volt bulb are connected in series across a 220 volt lines. Which electric bulb will glow more brightly

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