(a) A particle has mass m, charge +q and speed v. State the magnitude and direction of the force, if any,

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Three identical cells each having an e.m.f. of 1.5 V and a constant internal resistance

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Two long straight parallel copper wires A and B are clamped vertically. The wires pass

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A solid metal sphere of radius R is isolated in space. The sphere is positively charged so that

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(a) Kinetic theory of gases is based on some simplifying assumptions. Molecules of the gas are assumed to behave as hard elastic identical spheres.

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