Charged Particles, Conductors, and Electric & Magnetic Fields (HSC SSCE Physics): Flashcards

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Charged Particles in Uniform Electric Fields
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Define electric field

Force per unit charge

Electric field strength formula

E=FqE = \frac{F}{q}

Units of electric field

Vm1\text{V} \cdot \text{m}^{-1} or NC1\text{N} \cdot \text{C}^{-1}

Earth's fair-weather electric field strength

~100 Vm1100\text{ V} \cdot \text{m}^{-1} downward

Electric field between parallel plates formula

E=ΔVdE = -\frac{\Delta V}{d}

Force on charged particle in electric field

F=qEF = qE

Acceleration of charged particle formula

a=Eqma = \frac{Eq}{m}

Direction negative charges accelerate

Opposite to electric field direction

Work done by electric field formula

W=qΔVW = -q\Delta V or W=qEdW = qEd

Energy conservation in electric fields

ΔU+ΔK=0\Delta U + \Delta K = 0

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