Need help with electromagnetism – Please!!!!!?
I need assistance with a problem in electromagnetism. The magnetic field inside a solenoid with a diameter of 5.0 cm is measured at 2.0 T and is decreasing at a rate of 3.80 T/s. What is the electric field strength at a point 1.80 cm from the axis of the solenoid? I appreciate your help, and I will choose the best answer. Thank you!
2 Answers
I’m guessing this problem is as simple as multiplying the magnetic field magnitude decrease by 2*Pi*d. Some units cancel out to give the units of an electric field. So if I am not mistaken, it will be like this…
E = 3.80 T/s x (2 x Pi x 0.018 m) = 0.430 N/C
Please let me know if I am incorrect.
Feb 20, 2025
E= (r/2)(dB/dt)
where r is 1.8 cm (or 0.018 m)
dB/dt is the change, or 3.8 T/s
Plug it into the equation and the answer should be in V/m
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