Answer:
Explanation:
Given
Current in the first wire
Current in the second wire
wires are apart
Force per unit length between the current-carrying wires is
Force exerted by the wires is the same
Put the values
This force will be repulsive in nature as the current is flowing opposite
it can cause wear and tear and reduces efficiency as energy is lost.
The appropriate solution is "2.78 mm".
Given:
or,
As we know,
Fringe width is:
⇒
hence,
Separation between second and third bright fringes will be:
96m
Using SUVAT:
s=? u=0 a=3 t=8
s=ut+0.5*at^2
s=0.5*3*8^2
s=96m