CUET and UG exam NEET UG 2025 Mock Test Physics Electric Charges and Coulomb's Law Forces between Multiple Charges
A thin metallic spherical shell of radius r contains a charge Q on its surface. A point charge q1 is placed at the centre of shell and another charge q2 is placed outside the shell at a distance x from the centre. Then the forces on charges q1 and q2 respectively are:
1
\(\rm \frac{1}{{4\pi \varepsilon _0}}\frac{q}{{r^2}},\frac{1}{{4\pi \varepsilon_0}}\frac{{q_1 + q_2}}{{x^2}}\)
2
\(\rm \frac{1}{{4\pi \varepsilon _0}}\frac{q}{{r^2}},\frac{1}{{4\pi \varepsilon_0}}\frac{{q_1 q_2}}{{x^2}}\)
3
\(\rm zero,\frac{{q_2}}{{4\pi \varepsilon _0}}\frac{Q}{{x^2}}\)
4
\(\rm zero,\frac{{q_2}}{{4\pi \varepsilon _0}}\frac{Q+q_1}{{x^2}}\)