- #1
cheeseboy
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Question:
A coil of 90 turns, of resistance 6 ohm and area 28 cm² moves from a
uniform magnetic field of 0.02 Tesla to one of 0.42 Tesla in 3.0 second.
What average current flows in the wire (in amp) ?
Relevant equations:
EMF= (Area * Rate of change of magnetic flux) * Number of turns
I = EMF/Resistance
Attempted Solution:
EMF= ((0.28^2) * ((0.42-0.02)/3)) * 90 turns = 3.36
I = EMF/Resistance = 3.36/6 = 0.56 amps (i believe this is correct)
however answer given is 0.0056 amps where am I missing this factor of 100?
A coil of 90 turns, of resistance 6 ohm and area 28 cm² moves from a
uniform magnetic field of 0.02 Tesla to one of 0.42 Tesla in 3.0 second.
What average current flows in the wire (in amp) ?
Relevant equations:
EMF= (Area * Rate of change of magnetic flux) * Number of turns
I = EMF/Resistance
Attempted Solution:
EMF= ((0.28^2) * ((0.42-0.02)/3)) * 90 turns = 3.36
I = EMF/Resistance = 3.36/6 = 0.56 amps (i believe this is correct)
however answer given is 0.0056 amps where am I missing this factor of 100?
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