Question

A 141 turn circular coil of radius 2.61 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Over an interval of 0.177 s , the magnetic field strength increases from 53.1 mT to 96.9 mT . Find the magnitude of the average emf avg induced in the coil during this time interval, in millivolts.

A 141 turn circular coil of radius 2.61 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Over an interval of 0.177 s, the magnetic field strength increases from 53.1 mT to 96.9 mT. Find the magnitude of the average emf Eavg induced in the coil during this time interval, in millivolts Eavg = mV

Answer 1

av emf

E = N A (B2 - B1) / t

E = 141* 3.14* (0.0261^2) * ( 96.9 - 53.1)* 10^-3 / 0.177

E = 74.63 mV

======

Comment before rate in case any doubt, will reply for sure.. goodluck