An uncharged metal sphere suspended by a silk thread is placed in a uniform extermal electric field. E. (a) what is the magnitude of the electric field for points inside the sphere ? (b) is your answer changed if the sphere carriers a charge ?

Explanation

To solve the given question step by step, we will analyze the situation of an uncharged metal sphere placed in a uniform external electric field and then consider the case when the sphere carries a charge.

### Step 1: Understanding the scenario
We have an uncharged metal sphere suspended by a silk thread, placed in a uniform external electric field \( E \).

### Step 2: Electric field inside a conductor
According to electrostatic principles, the electric field inside a conductor in electrostatic equilibrium is always zero. This is because the free charges within the conductor rearrange themselves in response to an external electric field until they reach a state where the internal electric field cancels the external field.

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