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a) Define an ideal electric dipole. …

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a) Define an ideal electric dipole. Give an example. b) Derive an expression for the torque experienced by an electric dipole in a uniform electric field. What is net force acting on this dipole. c) An electric dipole of length 2cm is placed with its axis making an angle of 600 with respect to uniform electric field of 105N/C. If it experiences a torque of 8√3 Nm, calculate the (i) magnitude of charge on the dipole, and its potential energy

Posted by Spurti . 4 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Gaurav Seth 4 years, 6 months ago

A.

- A pair of equal and opposite charges seperated by a small vector distance is called an electric dipole. - An ideal dipole consists of two very very large charges + q and -q seperated by a very very small distance.

- An ideal dipole has almost no size.

- Molecules are made up of positive and negative charges seperated by small distances like water, ammonia etc and they act as electric dipoles. - Molecules which have non uniform distribution of charge are known as polar.Polar molecules will always be slightly negative on one end and slightly positive on the other Polar molecules are said to be permanent dipoles.

Eg: water, carbon dioxide.

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