Question

What is net magnetic feild and magnetic force at the centre of cube?? ​

Answer 1

Answer:

The current will be same along diagonally opposite and parallel edges as can be seen from the figure.

Considering those individual pair of wires, we can see that the center of the cube will be equidistant from both these wires and subtend the same angles θ

1

=θ

2

=θ for both the wires.

Therefore, from the formula mentioned in the concept, magnitude of magnetic field will be same due to both the wires.

However, by right hand grip rule, we can see that the direction of the magnetic fields due to both the wires is opposite and hence the resultant magnetic field due to the wires at that point will be zero.

Similarly, magnetic field of each wire will cancel out due to the wire opposite to it and hence the magnetic field at the center will be zero.