Recent content by kayneblue12
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Find ∆V while sliding a card through a card reader with magnetic field
emf = dΦ/dt = (B*A)*d/dt = B(dA/dt), dA/dt= L*d/dt(vt) = L*v, emf = B*L*v per coil Since there are 25 loops the total emf= 25(vBL) This is where I'm am stuck. Would I assume that B is 24 uT, the velocity as 3m/s , and the length as 1mm? If so I would get ∆V as 1.8*10^-6.- kayneblue12
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- Emf Field Magnetic Magnetic field Sliding
- Replies: 4
- Forum: Introductory Physics Homework Help
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Strength of magnetic field at the end of a wire wrapped nail.
V=I*R 6v=I*(0.6+0.9)ohms I=4amp B=100*(uo)(2N)(I)/L * 1/2 I think since the wire is double wrapped, we multiply the equation by 2, but since we are looking for the magnetic field at the end of the wire we also have to multiply the equation by 1/2 I=4A, uo= 4pi*10^-7 2N/L turns per unit...- kayneblue12
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- Eletromagnetism Field Magnetic Magnetic field Solenoid Strength Wire
- Replies: 1
- Forum: Introductory Physics Homework Help