Question

Due to the presence of the current I₁ at the origin:

Options

• The forces on AD and BC are zero.   

• The magnitude of the net force on the loop is given by `("I"_1"I")/(4pi)mu_0[2("b"-"a")+pi/3("a"+"b")]`

• The magnitude of the net force on the loop is given by `(mu_0"II"_1)/(24"ab")("b"-"a")`

• The forces on AB and DC are zero.

Answer 1

The forces on AB and DC are zero.

Explanation:

`vec"F"="I"(vec"ℓ"xxvec"B")`

Current I₁ has no impact on AD or BC. In order to explain this, consider that magnetic field `vec"B"` and current element I`vec"dℓ"` have parallel directions.