6. Two conducting loops are arranged as shown with their centers on the same vertical axis. If the lower loop has an increasing current in a counter-clockwise direction, which of the follow- ing statements is true about the induced current, if any, in the upper loop? A. It is clockwise. B. It is counter-clockwise. C. There is no induced current. D. It is steady. 7. The adjoining diagram could represent what type of field lines? A. Either a magnetic or an electric field B. Neither a magnetic nor an electric field C. Only a magnetic field due to a straight wire D. Only electric fields due to a point charge 8. A bar magnet is shoved into a coil of wire and remains inside motionless. During this process, a sensitive galvanometer, which measures charge flow, will 0 A. deflect only while the magnet is moving. B. not deflect at all. C. deflect and remain deflected as long as the magnet remains inside. D. have an oscillating deflection until the magnet is removed. 9. Which of the following could never produce a current in a closed loop of wire A. Moving the loop into the field of a magnet. B. Keeping the loop stationary while bringing the magnet closer to it. C. Turning off the flow of current in a neighboring wire. D. Simultaneously moving both the loop and a magnet, with the same velocity in the direction. 10. A loop of wire is moving upward in the field of a bar magnet. The vector F in the diagram in- dicates A. the force acting on an electron. B. the electromotive force. C. a centripetal force. D. the direction of the magnetic field.

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Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.