2. As shown below, a square loop of wire of side a moves through a uniform magne
ID: 1403487 • Letter: 2
Question
2. As shown below, a square loop of wire of side a moves through a uniform magnetic field of magnitude B perpendicular to the page at constant velocity V directed to the right. Which statement regarding the electric field induced in the wires is correct for the wires at the left and right sides of the loop? a. The electric field E is directed upwards in both the right and left sides of the loop. b. The electric field E is directed upwards in the right side and downwards in the left side of the loop. C.The electric field E is directed upwards in the left side and downwards in the right side of the loop. The electric field E is directed downwards in both the right and left sides of the There is no electric field present in any side of the loop. d. loop. e.Explanation / Answer
According to lenz law , A changing magnetic flux through a loop will induce current in the loop , and the direction of the induced current will allways create a magnetic field which opposes the flux change.
In this case as the loop is moving through a uniform magnetic field, with direction out of the page E will be downward in both the sides (Right and left) of the loop. (Using Rigth Hnad rule)
Total Induced Electric field will be Zero inside the loop as both will nullify each other.
The anwser is D.
There electric field is directed downwards in both the left and right side of loop.
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