The work done in carrying a charge Q, once round a circle of radius R with a charge Q2 at the centre is ………….
A. \(\frac{\mathrm{Q}_{1} \mathrm{Q}_{2}}{4 \pi \varepsilon_{0} \mathrm{R}^{2}}\)
B. Zero
C. \(\frac{\mathrm{Q}_{1} \mathrm{Q}_{2}}{4 \pi \varepsilon_{0} \mathrm{R}} \)
D. infinite
Answer:B
The work done in carrying a charge Q, once round a circle of radius R with a charge Q2 at the centre is ………….
A. \(\frac{\mathrm{Q}_{1} \mathrm{Q}_{2}}{4 \pi \varepsilon_{0} \mathrm{R}^{2}}\) B. Zero C. \(\frac{\mathrm{Q}_{1} \mathrm{Q}_{2}}{4 \pi \varepsilon_{0} \mathrm{R}} \) D. infinite