(a) In Figure 4, a rectangular conducting loop with resistance 2000 Q and length 2.2 m spin at 660 rpm. The vertical conductor at pl = 0.3 m from z axis is in a field B1 = 222 a, T, and the conductor at p2 = 1.7 m from z axis is in a field B2 = 128 a, T. (i) Compare the potential between resistors and determine current pass through conducting loop, including its direction. A machine requires the conducting loop to activate it. However, it must rotates on its own axis. Analyze the magnetic forces that act on conductor 1 (at pl = 0.3 m ) and conductor 2 (at p2 = 1.7 m) to assist you to judge movement of loop. (ii)

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Electric field

A physical field present around an electrically charged particle that exerts a force on all other charged particles is called an electric field. The charged particles present in the field either repel or attract. From electric charges or time-varying magnetic fields, the electric field originates. One of the manifestations of electromagnetic force which is one of the four fundamental forces present in nature are the electric fields and magnetic fields.