Question

a long straight wire is turned into a loop of radius 10 cm if a current 8 amp is passed through the loop find magnetic field at centre of loop

Answer 1

opposite too the direction of current

Answer 2

Answer:

Magnetic field at the center of the loop is, B = 5 × 10⁻⁵ T

Explanation:

It is given that,

Radius of the loop, r = 10 cm = 0.1 m

Current passed through the loop, I = 8 A

Magnetic field at the center of the loop is :

$B=\dfrac{\mu_0I}{2r}$

$B=\dfrac{4\pi \times 10^{-7}\times 8}{2(0.1)}$

B = 0.00005 T

B = 5 × 10⁻⁵ T

Hence, this is the required solution.