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JJBladester
Gold Member
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Homework Statement
Hooking up voltage to a solenoid (coil of wire) creates an electromagnet. Moving the electromagnet in and out of a larger coil hooked up to a galvanometer creates an emf (voltage) in the larger current.
Does an emf get created for a *stationary* electromagnet inside a larger coil of wire?
Homework Equations
Voltage generated = [tex]-N\frac{\Delta(BA)}{\Delta(t)}[/tex]
The Attempt at a Solution
My attempt at the solution included burning 3 resistors. I hooked up 6VDC to a 10 ohm resistor in series with the smaller coil (electromagnet). Before I could count to five, the resistor was glowing hot. I increased the resistor to 27 ohms and the same thing happened (twice).
So, afraid of getting kicked by my professor, I wasn't able to directly see what was happening with a stationary electromagnetic coil inside the larger solenoid. Should the galvanometer's needle move when the electromagnet is stationary and not moving?