Each sketch below shows three objects with an electric charge. In each case, dec

Question

Each sketch below shows three objects with an electric charge. In each case, decide whether there is a net force acting on the central object, which is larger and outlined in green. If there is a net force, decide whether it pushes the center object to the left or right. Then select the appropriate button under the sketch. For example, if there is a net force pushing the central object in the first sketch to the left, select the left button under the first sketch. If there is no net force on the central object in the second sketch, select the middle button under the second sketch. And so on

Explanation / Answer

1)
Here central object (-3) will experience equal force by 2 charges
Because 2 charges are equal and there distance is also same on either side
Answer: middle button

2)
force due to +2 on central object will be repulsive (towards right) since both charge are positive
force due to -2 on central object will be attractive (towards right) since sign of charges are different
So, there will be net force towards right
Answer: right button

3)
force due to right charge will be more than that due to left charge because central charge is at lesser distance from left charge
So, force of right charge will be towards left and this force dominates
Answer: left button

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