A car moves on a plane road. The induced...

A car moves on a plane road. The induced e.mf. In the axle connecting the two wheels is maximum, when it moves

eastwards at the equator

westwards at the equator

eastwards in the latitude `45^@`

at the poles

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A rectangular ABCD is roated anticlockwise with a uniform angular velocity about the axis shown in the figure. The axis of rotation of the coil as well as the magnetric field B are horizontal. The induced e.m.f. in the coil would be maximum, when the plane of the coil

Now assume that the straight wire carries a current of 50 A and a loop is moved to the right with a constant velocity, v = 10ms^-1 . Calculate the induced e.m.f. in the loop at the instant when x = 0.2 m. Take a = 0.1 m and assume that the loop has a large resistance.

A wheel with 8 matallic spokes each 50 cm long is rotated with a speed of 120 rev//mi n in a plane normal to horizontal component of earth's magnetic field. Earth's magnetic field at the phase is 0.4 G and angle of dip 60^(@) . Calculate the emf induced between the axle and rim of the wheel. How is the emf affected if number of spokes is increased ?

A rectangular, a square, a circular and an elliptical loop, all in the x-y plane, are moving out of a uniform magnetic field with a constant velocity Vvec = v_(0)hati . The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops, out of the field region, will not remain constant for

Figure shows a conducting rod PQ in contact with metal rails RP and SQ, which are 0.25 m apart in a uniform magnetic field of flux density 0.4T acting perpendicular to the plane of the paper. Ends R and S are connected through a 5 Omega resistance. What is the emf when the rod moves to the right with a velocity of 5ms^(-1) ? What is the magnitude and direction of the current through the 5 Omega resistance? If the rod PQ moves to the left with the same speed, what will be the new current and its direction?

Assume that the straight wire carries a current of 50 A and the loop is moved to the right with a constant velocity, v= 10 m//s . Calculate the induced emf in the loop at the instant when x = 0.2 m. Take a = 0.1 m and assume that the loop has a large resistance. :

A train is moving in the north-south direction with a speed of 108 kmh^(-1) . Find the e.m.f. generated between two wheels, if the length of the axle is 2m. Assume that the vertical component of earth's field is 8.0 xx 10^(-5) Wbm^(-2) .

A potential difference will be induced between the ends of the conductor shown in the figure, when the condutors moves along.

A car is moving at a constant speed of 60kmh^-1 on a straight road. Looking at the rear view mirror, the driver finds that the car following him is at a distance of 100 m and is approaching with a speed of 5 kmh^-1 . In order to keep track of the car in the rear, the driver begins to glance alternatively at the rear and side mirror of his car after every 2 s till the other car overtakes. If the two cars were maintaining thier speed, whihc of the following statement is/are correct?

Direction. In the following questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if assertion is true, but reason if false, (D) if both assertion and reason are false Assertion : When a coil is moved out of a magnet field acting normally to its plane, induced e.m.f. is produced in it. Reason : The induced e.m.f. is produced in a coil. When it is placed inside the magnetic field

MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE

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