Two thin rings each of radius R are placed at a distance d apart. The charges on the rings are + q and − q . The potential difference between their centres will be -

Question

Two thin rings each of radius R are placed at a distance d apart. The charges on the rings are + q and − q . The potential difference between their centres will be -, q R 4 π ε 0 d 2, q 2 π ε 0 1 R - 1 R 2 + d 2, z e r o, q 4 π ε 0 1 R - 1 R 2 + d 2

MARKS App · Accepted Answer

V A = k q R - k q R 2 + d 2 V B = - k q R - + + k 2 R 2 + d 2 - ∴ V A - V B = 2 k q R - 2 k q R 2 + d 2 ∴ V A - V B = q 2 π ε 0 1 R - 1 R 2 + d 2

Search any question & find its solution

Looking for more such questions to practice?