defence exam Army Havildar SAC Mock Test Series 2025 Physics Electric Fields and Gauss' Law Electric Field
A spherical conductor of radius 10 cm has a charge of 3.2 × 10−7 C distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere ?
\(\left(\frac{1}{4 \pi \epsilon_{0}} = 9 \times 10^{9} \text{Nm}^{2}/\text{C}^{2}\right) \)
1
1.28 × 106 N/C
2
1.28 × 107 N/C
3
1.28 × 104 N/C
4
1.28 × 105 N/C