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Two charges \(\mathrm{q}_1\) and \(\mathrm{q}_2\) are placed at the centres of two spherical conducting shells of radius…

Q1

Two charges \(\mathrm{q}_1\) and \(\mathrm{q}_2\) are placed at the centres of two spherical conducting shells of radius \(r_1\) and \(r_2\) respectively. The shells are arranged such that their centres are \(d\left[>\left(r_1+r_2\right)\right]\) distance apart. The force on \(q_2\) due to \(\mathrm{q}_1\) is :

a

\(\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}_1 \mathrm{q}_2}{\mathrm{~d}^2}\)

b

\(\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}_1 \mathrm{q}_2}{\left(\mathrm{~d}-\mathrm{r}_1\right)^2}\)

c

Zero

d

\(\frac{1}{4 \pi \varepsilon_0} \frac{\mathrm{q}_1 \mathrm{q}_2}{\left[\mathrm{~d}-\left(\mathrm{r}_1+\mathrm{r}_2\right)\right]^2}\)

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