Electrostatics> If two charges -8q and+2q are separated b...

If two charges -8q and+2q are separated by a distance equal to L, then where the third charge Q should be placed such that it is in equilibrium with the two charges? Plz reply.

Nikhil , 8 Years ago

Grade 11

1 Answers

Vikas TU

Last Activity: 7 Years ago

Force b/w -8q and Q would be:

F1 = k(8q)Q/x^2...............(1)

Force b/w +2q and Q would be:

F2 = k(2q)Q/(L +x)^2..............(2)

F1 = F2

8/x^2 = 2/(L+x)^2

4(L+x)^2 = x^2

(2L + 2x – x) (2L + 2x +x) = 0

x = -2L

and

x = -2L/3

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Electrostatics> If two charges -8q and+2q are separated b...

If two charges -8q and+2q are separated by a distance equal to L, then where the third charge Q should be placed such that it is in equilibrium with the two charges? Plz reply.

Nikhil , 8 Years ago

Vikas TU

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