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# induced emf calculation watch

1. a 2m long wire moves at right angles to a magnetic field of flux density of 0.62T at a speed of 0.43ms^-1. calculate the induced emf. thanks
2. I think its something like. Each second the 2m wire moves 0.43m through the magnetic field. This means every second the wire has moved through an area of 2*0.43 = 0.86 (m^2)

The magnetic flux is the magnetic flux density x the area.
So Magnetic flux every second = 0.86 * 0.62 = 0.5332.

The induced EMF is equal to = - the rate of change of flux
So i assume the EMF induced is -0.5332
3. a 2m long wire moves at right angles to a magnetic field of flux density of 0.62T at a speed of 0.43ms^-1. calculate the induced emf. thanks

V=Blv

=> V = 0.62 * 2 * 0.43

Correct me if I'm wrong?
4. Well that gives the same as what i got, so i assume so

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