Problem solving tips

## Electric Charges And Fields

- Want to score better marks in exams? Have a look at some problem solving tips.
1
Tips for: Calculation of electric field due to uniform charge distribution
Charge Q is distributed uniformly on length of a wire. It is bent in the form of a semicircular ring. Find the electric field at the centre of the ring.
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Suppose we have a uniformly charged circular ring of radius and charge . The electric field at a distance from the centre such that is given by :

Take .
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2
Tips for: Calculate electric field at any arbitrary point due to dipole
Calculate electric field due to dipole of dipole momentum at distance and angle .
3
Tips For: Calculation of force on dipole due to point charge
A short dipole of dipole moment P is placed near a point charge Q as shown in figure. Find force on the dipole due to the point charge