Question: A large positive charge pulls on a distant electron. How does the net

Question

Question: A large positive charge pulls on a distant electron. How does the net force on the electron
change if a slab of neutral glass is inserted
midway between the large positive charge and
the electron? Enter the letter corresponding
to the correct choice.

A. The net force is unchanged because the
positive charge has no e?ect on the neutral glass and the E-?eld of the positive
charge is una?ected by the glass.

B. The net force increases because the glass
is polarized by the positive charge and
generates a small additional E-?eld in
the same direction as the ?eld of the
positive charge.

C. The net force decreases because the glass
reduces the strength of the electric ?eld
that passes through it.

D. The net force decreases because the glass
is polarized by the positive charge and
generates a small additional E-?eld in
the opposite direction as the ?eld of the
positive charge

Explanation / Answer

since the glass is neutral, the charges get redistributed in such a way that, the charge total is zero. so the force applied remains same, as the net charge by the glass is zero and hence net force = zero. A is the answer.

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