Q3. Two charged concentric spheres have radii of $10 cm$ and $15 cm$ . The charge on the inner sphere is $4 \cdot 1 0^{- 8} C$ , and that on the outer sphere is $2 \cdot 1 0^{- 8} C$ . Find the electric field a) at $r = 12 cm$ b) at $r = 20 cm$ . Ans: a) $2.5 * 1 0^{4} N / C$ b) $1.35 * 1 0^{4} N / C$

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Q3. Two charged concentric spheres have radii of

10 cm

and

15 cm

. The charge on the inner sphere is

4 \cdot 1 0^{- 8} C

, and that on the outer sphere is

2 \cdot 1 0^{- 8} C

. Find the electric field a) at

r = 12 cm

b) at

r = 20 cm

. Ans: a)

2.5 * 1 0^{4} N / C

b)

1.35 * 1 0^{4} N / C

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(Solved): Q3. Two charged concentric spheres have radii of 10cm and 15cm. The charge on the inner sph ...