Write the equation for the induced voltage 'v' in the following diagram, if the coil has N turns:
1
\(\rm v=\frac{1}{N} \frac{d \phi}{dt}\)
2
\(\rm v=N \frac{d \phi}{dt}\)
3
\(\rm v=N^2 \frac{d \phi}{dt}\)
4
\(\rm v=\sqrt N \frac{d \phi}{dt}\)
Write the equation for the induced voltage 'v' in the following diagram, if the coil has N turns: