The electric field in the region is radially outwards and has the magnitude of E = kr…
Physics · JEE Main · NTA Exams — Electrostatics
The electric field in the region is radially outwards and has the magnitude of E = kr. The charge contained in a sphere of radius a is
- \(\frac{4}{3} \pi \varepsilon_{0} \mathrm{a}^{3}\)
- \(4 \pi \mathrm{k} \varepsilon_{0} \mathrm{a}^{3}\)
- \(\frac{2}{3} \pi \mathrm{k} \varepsilon_{0} \mathrm{a}^{3}\)
- \(4 \pi \mathrm{k} \varepsilon_{0} \mathrm{a}^{2}\)
Answer
(B) 4 k _ 0 a ^ 3
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