EXAMIANS
The developed electromagnetic force and or torque in electromechanical energy conversion system act in a direction that tends
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Self inductance of magnetic coil is proportional to
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Two coils are coupled in such a way that the mutual inductance between them is 20 mH. If the inductances of the coils are 40 mH and 50 mH respectively, the coefficient of coupling is
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A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m
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According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is
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An infinite non conducting sheet of charge has σ of 10-7 c/m3. Equipotential surface for a potential of 10 volts is.
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In an inductor current cannot change abruptly. Comment on the statement.
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The core of coil length is 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be
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A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is
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In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will
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