A circular coil has a 11.2 cm radius and consists of 29.0 closely wound turns of wire. An externally produced magnetic field of magnitude 2.78 mT is perpendicular to the coil. (a) If no current is in the coil, what magnetic flux links its turns? (b) When the current in the coil is 3.95 A in a certain direction, the net flux through the coil is found to vanish. What is the inductance of the coil?

icon
Related questions
Question

A circular coil has a 11.2 cm radius and consists of 29.0 closely wound turns of wire. An externally produced magnetic field of magnitude 2.78 mT is perpendicular to the coil. (a) If no current is in the coil, what magnetic flux links its turns? (b) When the current in the coil is 3.95 A in a certain direction, the net flux through the coil is found to vanish. What is the inductance of the coil?

Expert Solution
a) Magnetic flux links with the coil when there is no current

ϕ=NABcosθ=NπR2Bcosθ=29π0.112 m22.78 mT10-3 T1 mTcos0°=9.97×10-3 T·m2

steps

Step by step

Solved in 2 steps

Blurred answer