Question
Physics Question on Electric Charge
A charge 10μC is placed at the centre of a hemisphere of radius R = 10 cm as shown. The electric flux through the hemisphere (in MKS units) is
A
20×105
B
10×105
C
6×105
D
2×105
Answer
6×105
Explanation
Solution
According to Gauss?s theorem Electric flux through the sphere =ε0q ∴ Electric flux through the hemisphere =21ε0q =2×8.854×10−1210×10−6 =0.56×106Nm2C−1 ≈0.6×106Nm2C−1 =6×105Nm2C−1