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Answers
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Diagram of the electric field lines for a system of two positive point charges.
Question:--
1) Mention the SI unit of electric field.
Answer:-
The derived SI units for the electric field are volts per meter (V/m), exactly equivalent to newtons per coulomb (N/C).
SI unit: volts per meter (V/m).
2) Define dipole.
Answer:-
In electromagnetism, there are two kinds of dipoles: An electric dipole deals with the separation of the positive and negative charges found in any electromagnetic system.
Example:
A simple example of this system is a pair of electric charges of equal magnitude but opposite sign separated by some typically small distance.
3) What is the net charge on a dipole?
Answer:-
An electric dipole is a type of electric charge distribution which contains two point charges, one positive and one negative. The two charges in a dipole have the same magnitude, so the net charge of the dipole is zero. An electric dipole is a combination of two point charges having equal magnitude but opposite signs.
4) Draw the electric field lines for a system of two positive point charges.
Answer:-
The field lines around a system of two equal positive charges (q, q) shows mutual repulsion between two charges.
[Note that: Diagram show on the above]
5) When will be the torque acting on the electric dipole is maximum and minimum?
Answer:-
Maximum:
Torque is maximum when dipole is held perpendicular to the field
Minimum:
Torque is minimum refers to zero torque. This is possible only when the angle is 90 or perpendicular.
Cheers.
SI unit if electric field is newton/coulomb