Current Electricity

Related Questions

• A battery having e.m.f.$5\,\,V$ and internal resistance $0.5 \Omega$ is connected with a resistance of $4.5 \Omega$ then the voltage at the terminals of battery is

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• A galvanometer of resistance 36 $\Omega$ is changed into an ammeter by using a shunt of 4 $\Omega$. The fraction f0 of total current passing through the galvanometer is

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• An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be

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• A galvanometer has resistance of $7\,\Omega $ and gives a full scale deflection for a current of 1.0 A. How will you convert it into a voltmeter of range 10 V

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• Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of 15 ohms is connected in series with the smaller of the two. The null point shifts to 40 cm. The value of the smaller resistance in ohms is

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