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bishface34:
A current of 3.20 A in a solenoid produces a magnetic field of 4.0×10−3 T . The current is changed to 6.40 A. What is the magnitude of the magnetic field after the change?
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AZ:
If you know the formula, you can easily find the answer. If you double the current, what happens to the magnetic field?
AZ:
Look at it like this magnetic field = some numbers * current If you double the current, what happens to the magnetic field? How much would it increase by?
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