EXAMIANS
A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is
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The virtual height of an ionospheric layer is __________ true height
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A rectangular waveguide is a
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A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by
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Ohm’s law in point from field theory can be expressed as
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The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is
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The radiation pattern of loop antenna is
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A satellite that simply reflect back the signals from one region of the earth to the other region is known as
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What is the value of total electric flux coming out of a closed surface?
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A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity
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