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Q.

A toy car has a bar magnet in it with a north pole facing the front of the car. If we face the north pole of another bar magnet to the front of the car in which direction it will move?


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a

Forward

b

Backward

c

Will not move

d

it will turn around 

answer is B.

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Detailed Solution

If we face the north pole of another bar magnet to the front of the car, it will move backward.
“It is known that like charges repel each other and vice versa.” Hence, the north pole of another bar magnet is kept in front of the north pole of the toy car, and the car would move backward because of the repulsive force between like poles.
 
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A toy car has a bar magnet in it with a north pole facing the front of the car. If we face the north pole of another bar magnet to the front of the car in which direction it will move?