Current Electricity

Related Questions

• A cell of internal resistance $1.5\,\Omega $ and of e.m.f.1.5 volt balances 500 cm on a potentiometer wire. If a wire of $15\,\Omega $ is connected between the balance point and the cell, then the balance point will shift

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• Some electric bulbs are connected in series across a 220 V supply in a room. If one bulb is fused then remaining bulbs are connected again in series across the same supply. The illumination in the room will

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• When a resistor of $11 \Omega$ is connected in series with an electric cell, the current flowing in it is 0.5 A. Instead, when a resistor of $5 \Omega$ is connected to the same electric cell in series, the current increases by 0.4 A. The internal resistance of the cell is

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• A potentiometer consists of a wire of length 4 m and resistance 10 $\Omega$. It is connected to cell of emf 2 V. The potential difference per unit length of the wire will be

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• A moving coil galvanometer has a resistance of $50\,\Omega $and gives full scale deflection for 10 mA. How could it be converted into an ammeter with a full scale deflection for 1A

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