Question

Four charges are placed at the corners of a squres of side'a'.find the net force on the charge at the third corner?

Answer 1

Answer:

Explanation:

As the charges are equal and same sign at opposite corners of the square so the forces are equal and opposite at the center. So net force on charge at center will be zero.

Answer 2

Answer:

• As the charges are equal and same sign at opposite corners of the square so the forces are equal and opposite at the center.
• So net force on charge at center will be zero.

Explanation:

i numbered corners as 1,2,3 & 4

i calculate force on 2 due to 1,3 & 4

F21 = force on 2 due to 1

F23 = force on 2 due to 3

F is resultant of F21 & F23 directed towards diagonal

add them by vector resultant

F24 is also in the same direction along diagonal

so net force

Fnet = F24 + F