A negatively charged rod is brought near a metal sphere supported by an insulati

Question

A negatively charged rod is brought near a metal sphere supported by an insulating stand without touching it. What happens to the free electrons in the sphere? A) they are pulled out of the sphere into the rod B) they pass from the sphere into the rod C) they shift away from the rod on the sphere D) they are pushed out of the sphere and into the air A negatively charged rod is brought near a metal sphere supported by an insulating stand without touching it. What happens to the free electrons in the sphere? A) they are pulled out of the sphere into the rod B) they pass from the sphere into the rod C) they shift away from the rod on the sphere D) they are pushed out of the sphere and into the air A) they are pulled out of the sphere into the rod B) they pass from the sphere into the rod C) they shift away from the rod on the sphere D) they are pushed out of the sphere and into the air

Explanation / Answer

Given

the rod is negatively charged and placed near a metal sphere then

due to the coulomb's force of repulsion the free electrons in the metal sphere are shift away from the rod on the sphere

so the answer is option C

they shift away from the rod on the sphere

the charges may not pulled out from the sphere, if we grounded the sphere so that all the free electrons goes to ground and remains the positive charges only this is called chsarge by induction making the sphere of positively charged with the help of a negatively charged rod keeping near the metal sphere(with out touching the sphere)

so except option C all are incorrect

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