Question

the magnitude of magnetic field due to current carrying arc of radius R having a current I substanding an angle of 60° at the centre O is.??

A)μ↓0 I/8R
B)μ↓0I/10R
C)2μ↓0I/4πR
D)μ↓0I/12R

pls answer me ​

Answer 1

Answer:

At the center of a current carrying coil, the magnetic field intensity is directly proportional to the current and inversely proportional to the radius of the coil. So, if the current is doubled and radius is halved, then the value of B increases by 4 times the initial value

Explanation: