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Field & Potential |
= − | ΔV | d |
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E = − ∇V |
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Electric Field |
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E = k |
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dq | r̂ |
r2 |
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Electric Potential |
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V = k |
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dq | r |
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Capacitive Potential Energy. |
U = | 1 | CV2 = |
1 | | Q2 | = |
1 | QV | 2 | 2 | C | 2 |
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Electric Current |
= | Δq | Δt |
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Ohm's law |
V = IR
E = ρ J
J = σE |
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Resistors In Series |
Rs = ∑ Ri
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Capacitors In Parallel |
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Cp = ∑ Ci
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Magnetic Force, Charge |
FB = qvB sin θ
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FB = q v × B
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Magnetic Force, Current |
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FB = IℓB sin θ
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dFB = I dℓ × B
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Biot-Savart Law |
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B = |
μ0I | |
ds × r̂ | 4π | r2 |
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Electric Flux |
ΦE = EA cos θ
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ΦE = |
| E · dA |
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Magnetic Flux |
ΦB = BA cos θ
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ΦB = | | B · dA |
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Induced Emf |
= − |
ΔΦB | Δt |
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Ampere's Law
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∮B · ds = μ0ε0 |
dΦE | + μ0I |
dt |
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