ABC is a very small equilateral triangles of side `0.5 xx 10^(-3)` m . A charge of `+20` aC (attocoulomb) is placed at the corner A and two charges , each of `-10`aC , at B and C . Calculate the potential at a point on the prolongation of AC 2 cm away from A .
[Hint: 1 aC (attocoulomb = `10^(-18)` coulomb]

Calculate the potential at a point P due to charge of 5xx10^(-7) C located 11 cm away.

A charge of 0.5 nC is placed at the centre of an equilateral triangle of side 10 cm. Calculate the potential at all the three vertices of the triangle.

The potential at a point due to charge of 5xx10^(-7)C located 10 cm away is

The potential at a point due to charge of 5xx10^(-7)C located 10 cm away is

Four point charges each of 10 nano coulomb are placed at the four corners of a square of side 2 m each. Find the neat potential at the centre of the square.

charges of 20nC each are placed at the corners A and B of a square ABCD of side sqrt(8)cm and charges of -10nC at the corners C and D. find the potential at the centre of the square.

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A small current element 5 xx 10^(-5) A m is placed at the corner A along AB of an equilateral trianle ABC. Calculate the intensity of the magnetic field at B and C. Each side of the triangle is 20cm.

Charge of 5 mu C each are placed at the corners of an equilateral triangle of side 10 cm. Then the force on each charge is :-

ABC is a small , isosceles right angled-triangle of hypotenuse 1 cm . A charge of +4pC (picocoulomb) is placed at the right-angled corner A and -20 pC and -20 pC at B and C respectively . Show that this system of charges may be treated as a dipole for all external points at large distances . Calculate the potential due to this system of charges of charges at a point on the prolongation of the side AC at a distance 40 cm from A .