Charge and Energy

May 07, 2011 4 Replies

We know that charge of the electron is 1.6e-19 C and the work function of the electron is 1.6e-19 J can anyone descripe the relation between charge and energy and why the value remains same?


Work =3D energy =3D Fd =3D Force times distance

F =3DqE =3D charge times electric field - Force

E =3D electric field =3D volts per distance =3D volts per meter =3D V/d

multiply force eqation by distance to get energy

Fd =3D qEd

substitute electric field equation

energy =3D Fd =3D qEd =3D q(V/d)d =3D qV

energy =3D qV

units of electron volts =3D energy

1 electron volt =3D 1.6e-19 J=A0

May is finals month. He's toast.

n
d

Ahh finals, That explains it.

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