R - Galileo and Einstein
R - Galileo and Einstein
R - Galileo and Einstein
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Potential Energy of Dipole in Electric Field<br />
• Taking the dipole initially<br />
perpendicular to the field, if<br />
• d<br />
it turns to angle the<br />
electric forces have pushed<br />
the charges distances <br />
in their direction of action,<br />
so have done work<br />
<br />
2 QE / 2 cos <br />
• Therefore the potential<br />
energy of the dipole is:<br />
<br />
pE<br />
/ 2 cos<br />
F <br />
QE<br />
p<br />
-Q<br />
+Q<br />
<br />
<br />
F<br />
<br />
QE<br />
/ 2cos<br />
U<br />
p<br />
E.
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