Two wires A & B are carrying currents \[{{I}_{1}}\And {{I}_{2}}\]as shown in the figure. The separation between them is d. A third wire C carrying a current I is to be kept parallel to them at a distance x from A such that the net force acting on it is zero. The possible values of x are: [JEE Main 10-4-2019 Morning] |
A) \[x=\left( \frac{{{I}_{1}}}{{{I}_{1}}-{{I}_{2}}} \right)d\]and\[x=\frac{{{I}_{2}}}{({{I}_{1}}+{{I}_{2}})}d\]
B) \[x=\pm \frac{{{I}_{1}}d}{({{I}_{1}}-{{I}_{2}})}\]
C) \[x=\left( \frac{{{I}_{1}}}{{{I}_{1}}+{{I}_{2}}} \right)d\]and\[x=\frac{{{I}_{2}}}{({{I}_{1}}-{{I}_{2}})}d\]
D) \[x=\left( \frac{{{I}_{2}}}{{{I}_{1}}+{{I}_{2}}} \right)d\]and\[x=\left( \frac{{{I}_{2}}}{{{I}_{1}}-{{I}_{2}}} \right)d\]
Correct Answer: B
Solution :
[b] |
Net force on wire carrying current I per unit |
length is |
You need to login to perform this action.
You will be redirected in
3 sec