# Rotating Coil#

## Question Text#

A coil of $${{params.N }}$$ turns encloses an area of $${{params.a }}\rm\ {cm^2}$$. It is rotated in $${{params.t }}\textrm{ s}$$ from a position where its plane is perpendicular to Earth’s magnetic field to one where its plane is parallel to the field. If the strength of the field is $${{params.B }} \times 10^{-5} \textrm{ T}$$ what is the average emf induced in the coil?

### pl-submission-panel#

$$\varepsilon=$$ $$\rm\ V$$