The electric field in a certain region is acting radially outward and is given by E = Aa. A charge contained in a sphere of radius ’ a ’ centered at the origin of the field, will be given by ?

The electric field in a certain region is acting radially outward and is given by E = Aa. A charge contained in a sphere of radius ’ a ’ centered at the origin of the  field, will be given by ?



(a) \( A \varepsilon_0 a^2 \)

(b) \( 4 \pi \varepsilon_0 A a^3 \)

(c) \( \varepsilon_0 A a^3 \)

(d) \( 4 \pi \varepsilon_0 A a^2 \)


Answer :  (b) \( 4 \pi \varepsilon_0 A a^3 \)





\( \Phi = A a \)


\( E = \dfrac{1}{4 \pi \varepsilon_0} \cdot \dfrac{q}{a^2} \)


\( A a = \dfrac{1}{4 \pi \varepsilon_0} \cdot \dfrac{q}{a^2} \)


\( q = 4 \pi \varepsilon_0 A a^3 \)



No comments:

Post a Comment

Please provide your valuable feedback. Students, Parents, Teachers.