Current Electricity

Related Questions

• A uniform wire of resistance $9 \Omega$ is cut into 3 equal parts. They are connected in the form of equilateral triangle ABC. A cell of e.m.f. 2 V and negligible internal resistance is connected across B and C. Potential difference across AB is

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• When the resistance of $9 \Omega$ is connected at the ends of a battery, its potential difference decreases from 40 volt to 30 volt. The internal resistance of the battery is

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• At what temperature will the resistance of a copper wire become three times its value at $0^oC$ (Temperature coefficient of resistance for copper = $4 \times 10^{–3}$ per $^oC$)

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• Four resistances of $100 \Omega$ each are connected in the form of square. Then, the effective resistance along the diagonal points is

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• The current in the following circuit is

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