Electromagnetic Field Theory Two straight parallel conductors carry equal currents in opposite direction. The force between them is attractive. zero. repulsive. none of above. attractive. zero. repulsive. none of above. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The tubes of force within the magnetic material are known as lines of force. magnetic flux. tubes of indication. none of them. lines of force. magnetic flux. tubes of indication. none of them. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as self inductance. capacitance. mutual inductance. series aiding inductance. self inductance. capacitance. mutual inductance. series aiding inductance. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be 7.5 N. 15 N. 20 N. 3.75 N. 7.5 N. 15 N. 20 N. 3.75 N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Find the length of a conductor which is moving with a velocity 0.4m/s in a magnetic field of 8T, inducing an emf of 20V. 6.25m. 5.25m. 0.5m. 0.6m. 6.25m. 5.25m. 0.5m. 0.6m. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory 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 Bo ω sinω t. Zero. ab Bo cosω t. abω Bo sinω t. Bo ω sinω t. Zero. ab Bo cosω t. abω Bo sinω t. ANSWER DOWNLOAD EXAMIANS APP
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