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Equation Summary for Electric Fields

	For All Force Fields		Units
Force	F=eq learn 2nd >		N
Electric Field Strength	e=F/q learn 2nd >		N/C
Work (electric potential energy)	W=EE=qDV learn 5th>		J
Electric Potential	DV=EP/q (by definition) learn 5th>		V
	Uniform Electric Fields see note	Point Charge Electric Fields
Force	see above for all force fields	F=kq1q2/r**2 learn 1st >	N
Electric Field Strength	e=V/d learn 5th>	e=kq/r**2 learn 3rd >	N/C
Work (electric potential energy)	W=DEE =eqd learn 4th >	EE=kq1q2/r learn 6th>	J
Electric Potential	V=ed learn 5th>	V=kq/r learn 6th>	V

note: Although these equations are stated to be true for uniform fields they can be true for any field if the limit of the variables is infinitely small. For example E=V/d could be expressed in any field as e=DV/Dd where D - "delta" means change in. In this example we would say that the electric field strength is the gradient of the potential.

Variable Definitions

F - Force (N)

q - Electrical Charge (C)

e- Electric Field strength (N/C)

r - radius (m)

W - work (J)

EE - Electrical Potential Energy (J)

V - Electrical Potential (V)

d - distance (m)

comparison to gravitational fields

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