Question

Benjamin places a negatively charged glass rod near a neutrally charged metal sphere. What happens to the charges on the sphere? Select all that apply.

a
The surface of the sphere on the opposite side from the glass rod becomes positively charged.
b
The entire surface of the sphere becomes negatively charged.
c
The surface of the sphere near the glass rod becomes negatively charged.
d
The surface of the sphere near the glass rod becomes positively charged.
e
The surface of the sphere on the opposite side from the glass rod becomes negatively charged.
f
The entire surface of the sphere becomes positively charged.

Answer 1

Correct answers: d and e.

Explanation: The negative rod repels electrons in the conducting sphere, driving them to the far side. That leaves an induced positive charge on the near side (d) and an induced negative charge on the far side (e). The sphere as a whole remains electrically neutral unless it is grounded.