Question

Charges of +2 µC and +3 µC are 4 mm from each other. Raina’s group draws four diagrams trying to represent the electrical force between the charges.

Which diagram is correct?

A) W
B) X
C) Y
D) Z

Answer 1

The correct diagram would be A) W

Answer 2

Answer: The correct answer is option A.

Step-by-step explanation:

When two like charges come closer to each other they will repel each other.

When two unlike charges come closer to each other they will attract.

`q_1=+2\mu C,q_2=+3\mu C`

Force on
`q_1` due to
`q_2`:

`F_(12)=k(q_1* q_2)/(r^2)`

Force on
`q_2` due to
`q_3`:

`F_(21)=k(q_2* q_1)/(r^2)`

`F_(12)=F_(21)`

Therefore, equal force is exerting on both the charges. The diagram drawn by Raina marked "W" is correct. Hence the correct option is (A).