Current Electricity

Related Questions

• A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes through the coil. When it is converted to a 10 A ammeter, the shunt resistance is

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• Four wires AB, BC, CD, DA of resistance 4 ohm each and a fifth wire BD of resistance 8 ohm are joined to form a rectangle ABCD of which BD is a diagonal. The effective resistance between the points A and B is

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• The effective resistance between the points $A$ and $B$ in the figure is

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• Two batteries A and B each of e.m.f. 2 V are connected in series to an external resistance R = 1 ohm. If the internal resistance of battery A is 1.9 ohms and that of B is 0.9 ohm, what is the potential difference between the terminals of battery A

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• Masses of three wires of copper are in the ratio of $1 : 3 : 5$ and their lengths are in the ratio of 5:3:1. The ratio of their electrical resistances are

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