A thermally insulated rigid container contains an ideal gas heated by a filament of resistance 100 ohm through a current of 1 A for 5 min, then change in internal energy is
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A particle having a mass of 10⁻² kg carries a charge of 5 x 10⁻⁸C. The particle is given an initial horizontal velocity of 10⁵ m/s. In the presence of electric field E⃗ and magnetic […]
Two parallel long wires carry currents i₁ and i₂ with i₁ > i₂ . When the currents are in the same direction, then the magnetic field midway between the wires is 10μT. When the direction […]
A galvanometer has a coil of resistance 100 ohm and gives a full-scale deflection for 30 mA current. It is to work as a voltmeter of 30 volt range, the resistance required be added will […]
A planar coil having 12 turns carries 15 A current. The coil is oriented with respect to the uniform magnetic field B=0.2Î T such that its directed area is A= 0.04Îm². The potential energy of […]
A thin ring of radius R meter has charge q coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of f revolutions/s. The value of magnetic induction in Wb/m² […]
The magnetic field in a certain region of space is given by B =8.35×10⁻² Î T. A proton is shot into the field with velocity v=(2×10⁵i ̂ + 4×10⁵ j ̂ ) m/s. The proton […]
A proton is moving in a uniform magnetic field B in a circular path of radius a in a direction perpendicular to Z-axis along which field B exists. Calculate the angular momentum. If the radius […]
A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T acting in y direction, when the particle velocity is (2i + 3j) x 10⁶ m/s, is
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When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V supply, the power drawn by them will be
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(a) 60 W (b) 180 W (c) 10 […]
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