Question

A +1c charge and a +2c charge are held 10m apart. What force will the 1c charge feel due to the 2c charge? ( include if attractive or repulsive)

Answer 1

Charges are,

91 = +10 92 = +20

Distance between the charges,

r = 10 m

So, force on $q_{1}$ due to $q_{2}$ is,

                          

1 (142 F = 4περ r2

                               

X 601 X 6 = 1 x 2 (10)2 = 9 x 10° 4100

                               

= 1.80 x 108 N

Since, like charges repel and unlike charges attract. Here, both the charges are positive. So, the force is repulsive.