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A spherical conductor of radius 12 cm has a charge of 1.6 xx 10 ^(7)C distributed uniformly on its surface. What is the electric field inside the sphere (ii) just outside the sphere ©At a point 18 cm from the centre of the sphere? |
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Answer» Solution :Here ` q= 1.6 xx 10^(-7)C and R = 12 cm =0.12 ` Electric field at any point insidethe sphere E=0 (ii) Here ` q= 1.6 xx 10^(-7)C and R = 12 cm =0.12 ` Electric field at a point just outside the sphere ` "" E= ( q )/( 4 pi in _0. R^(2))=( 1.6 xx 10^(-7) xx 9 xx 10^(9))/( (0.12)^(2))= 10 ^(5)NC ^(-1) ` (c) Here ` q= 1.6 xx 10^(-7)C and R = 12 cm =0.12 ` Electric field at any point18 cm from the CENTRE of sphere (i.e. r= 18 cm =0.18 m) ` E = ( q)/( 4 pi in _0. r^(2)) =( 1.6 xx 10 ^(-7) xx 9 xx 10 ^(9))/( (0.18)^(2))= 4.44 xx 10 ^(4) N C^(-1) ` |
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