Question

+4q and -q are 2 charges separated by a distance d meter . where should be a third charge +q be place be attain eguilibrium

Answer 1

Answer:

At a distance d from -q charge.

Explanation:

For equilibrium, net force must be zero.

Since the two charges are opposing, the effect of them any charge placed in between them will be in the direction,resulting in non zero sum, thus cannot be in equilibrium.

So, it has to be placed out side.

Now the question is whether near 4q or -q.

Since the magnitude of 4q is greater it's effect can be felt at longer distances and can counteract the effect of -q. But not in case of -q.

So,it has to be closer to -q.

Refer the attachment.

Hope it helps you!!!

Answer 2

Answer:d/3 form -q

Explanation:wo photo me he dhekh Lena