Physics-
General
Easy
Question
A particle is moving in a horizontal circle with constant speed. It has constant :
- Velocity
- Acceleration
- Kinetic energy
- Displacement
The correct answer is: Kinetic energy
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A conducting bar rolls down a slope made of conducting rails. The bottom ends of the rails are connected by another conducting rail as shown in the figure. There is a uniform magnetic field B pointing upward. Due to the bar's motion, there is an induced current in the bar-rail circuit. What is the direction of the magnetic force on the bar?
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