Which of the following is a WRONG statement? Please explain WHY it is wrong. A)
ID: 1482124 • Letter: W
Question
Which of the following is a WRONG statement? Please explain WHY it is wrong.
A) At electrostatic equilibrium, the electric field inside a negatively charged metal ball is non -zero and is directed towards the center of the ball.
B) A charged plastic rod would attract a stream of water slowly coming out of a faucet, whether the sign of the charge of the rod is positive or negative.
C) Particle A has twice the charge and twice the mass of nearby Particle B and there are no other objects around. Compared to the acceleration on Particle A, the acceleration of Particle B is twice as much.
D) When the distance between two charges is doubled, the electrical force between the charges is reduced by a factor of four.
E) The electric field just below a negatively charged, horizonally positioned metal plate is directed vertically up.
Explanation / Answer
B) A charged plastic rod would attract a stream of water slowly coming out of a faucet, whether the sign of the charge of the rod is positive or negative.
It is becuase when a glas rod charged by rubbing a cloth it aquires positive charge and when a plastic straw is charged by rubbing a cloth it aquires negative charge. Therefore a charged glass rod attracts a charged plastic rod.They will attract becuase oppsites attract. If something is positivley charge and the other this is negativley charged they will almost always attract.