AP EAMCET202021 Sep 2020Evening ShiftPhysicsElectrostaticsActual
Electric potential at a point distant (0.5 ~m ) from a spherical conductor of radius (0.2 ~m ) charged to (+1 nC ) is
Options
- A(+9 ~V )
- B(-9 ~V )
- C(+18 ~V )
- D(-18 ~V )
Correct answer
C. (+18 ~V )
Step-by-step solution
Charge on spherical conductor, (q=+ C ) (=10⁻⁹ C ) Radius, (R=0.2 ~m ) Distance of point from spherical conductor, (r=0.5 ~m ) ( ) Electric potential, (V= 1 4 ₀ q r ) (=9 10^9 10⁻⁹ 0.5 = 9 0.5 =18 ~V )