Two charges q 1 and q 2 are placed at the centres of two spherical conducting shells of…
Physics · Class 12 · CBSE — Electric Charges and Fields
Two charges q1 and q2 are placed at the centres of two spherical conducting shells of radius r1 and r2 respectively. The shells are arranged such that their centres are d [ > (r1 + r2)] distance apart. The force on q2 due to q1 is:
- \(\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}_1 \mathrm{q}_2}{\mathrm{~d}^2}\)
- \(\frac{1}{4 \pi \varepsilon_0} \frac{q_1 q_2}{\left(d-r_1\right)^2}\)
- Zero
- \(\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}_1 \mathrm{q}_2}{\left[\mathrm{~d}-\left(\mathrm{r}_1+\mathrm{r}_2\right)\right]^2}\)
Answer
(A) 1 4 _0 q _1 q _2 ~d ^2
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