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A plastic rod has been formed into a cir...

A plastic rod has been formed into a circle of radius R. It has a positive charge `+Q` uniformly distributed along one-quarter of its circumference and a negative charge of ` -6Q` uniformly distributed along the rest of the circumference (figure). With V = 0 at infinity, what is the electric potential `-6Q`
(a) at the centre C of the circle and
(b) at point P, which is on the central axis of the circle at distance z from the centre?

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PHYSICS GALAXY - ASHISH ARORA-ELECTROSTATICS-Partice Exercise
  1. Find the potential difference between points a and b in and electric f...

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  2. Consider a spherical surface of radius 4 m cenred at the origin. Point...

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  3. A plastic rod has been formed into a circle of radius R. It has a posi...

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  4. A ring of radius R is having two charges q and 2q distributed on its t...

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  5. A spherical oil drop, radius 10^(-4) cm has on it at a certain a total...

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  6. Three charges 0.1 coulomb each are placed on the corners of an equila...

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  7. A system consists of two concentric spheres, with the inside sphere ...

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  8. At the end points of a line sigment of a length of d = (sqrt(337))/(84...

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  9. A conducting sphere S1 of radius r is attached to an insulating handle...

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  10. A uniform disc of radius R is charged with a uniform surface charge de...

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  11. A dielectric cylinder of radius a is infinitely long. It is non-unifor...

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  12. In figure-, an electric dipole is placed at a distance x from an infin...

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  13. Two point dipoles phat(k) and (P)/(2) hat(k) are located at (0, 0, 0)...

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  14. Find the magnitude of the electric field at the point P in the configu...

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  15. The graph in figure-shows the potential energy of an electric dipole t...

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  16. An electric dipole with dipole moment P oriented in the positive direc...

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  17. An electric dipole is placed at a distance x from centre O on the axis...

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  18. A dipole with an electric moment p is located at a distance r from a a...

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  19. Two short electric dipoles are placed as shown in figure. Find the pot...

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  20. In the figure shown S is a large nonconducting sheet of uniform charge...

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