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15 Cards in this Set
- Front
- Back
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Charge of an electron / proton |
± 1.60 x 10^-19 C |
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Coulomb's Law |
Fe = kq1q2 / r^2 Fe = electrostatic force k = Coulombs constant |
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Coulomb s Constant |
k = 1/4πε0
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Permittivity of Free Space |
ε0 = 8.85 × 10^-12 C^2/Nm^2 |
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Electric Field Equation |
E = Fe / q = kQ / r^2 k = electrostatic constant q = test charge Q = source charge |
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Electrical Potential Energy |
U = kQq/r |
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Electrical Potential Equation |
V = U/q or V = kQ/r |
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Potential Difference Equation |
∆V = Vb - Va = Wab / q Wab is work needed to move charge q through an electric field from a to b |
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Tesla units |
T = 1Ns/mC |
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Gauss unit |
1T = 10^4 gauss |
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Magnetic field of a straight wire |
B = μI / 2πr B is magnetic field at distance r from the wire µ is the permeability of free space I is current |
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Permeability of free space |
µ = 4π x 10^-7 Tm/A |
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Magnetic field of a circular wire |
B = µI / 2r |
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Magnetic force equation |
FB = qvBsinθ q charge b magnetic field |
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Force on a current carrying wire |
FB = ILBsinθ |
