A conducting sphere fo radius 10 cm has an unknown charge. If the electric field 20 cm from the center of the sphere is `1.5xx10^(3) N//C` and points radilly inwards, what is the net charge on the sphere ?

Explanation

To find the net charge on the conducting sphere, we can use the formula for the electric field due to a point charge, which also applies to a uniformly charged conducting sphere. The electric field \( E \) at a distance \( r \) from the center of a charged sphere can be expressed as:

\[ E = \frac{q}{4 \pi \epsilon_0 r^2} \]

Where:
- \( E \) is the electric field (in N/C),
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