Question 587: Electrostats & Capacitance

Question

An electric field of 1000 V/m is applied to an electric dipole at angle of 45o. The value of electric dipole moment is 10–29 C.m. What is the potential energy of the electric dipole?

Accepted Answer

U = $$-$$ $$\overrightarrow P .\overrightarrow E $$
= $$-$$ PE cos $$	heta $$
= $$-$$ (10
$$-$$29
) (10
3
) cos 45
o
= $$-$$ 0.707 $$ 	imes $$ 10
$$-$$26
J
= $$-$$ 7 $$ 	imes $$ 10
$$-$$27
J.

Answer

- 7 $$ 	imes $$ 10–27 J

Answer

$$-$$ 9 $$ 	imes $$ 10–20 J

Answer

$$-$$ 10 $$ 	imes $$ 10–29 J

Answer

$$-$$ 20 $$ 	imes $$ 10–18 J

Electrostats & Capacitance

An electric field of 1000 V/m is applied to an electric dipole at angle of 45o. The value of electric dipole moment is 10–29 C.m. What is the potential energy of the electric dipole?

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