James gathered a teflon rod, silk cloth, and four identical metal balls (A, B, C
ID: 1524286 • Letter: J
Question
James gathered a teflon rod, silk cloth, and four identical metal balls (A, B, C, and D) for electrostatics experiments. The metal balls are mounted on electrically insulating structures so that any induced electric charges on the metal balls don't flow out through the support structures. In experiment 1, in the first step he put metal ball A and B in contact with each other. He rubbed the red-colored end of the teflon rod with silk cloth, and then brought the rubbed end of the teflon rod close to, but not touching, the ball A. In the second step, while he was keeping the teflon rod close to the ball A, he separated the ball B from the ball A. In experiment 2, the same procedures were done in the first step: he put the ball C and D in contact with each other, and then brought the teflon rod rubbed with silk cloth close to, but not touching, the ball C. In the second step, unlike in experiment 1, he first moved the teflon rod far away from the metal balls and then separated the metal ball D from the ball C. The figures below illustrate these experiments.
Which of the following does most accurately describe what happens on the metal ball B and D?
The figures below illustrate these experiments. (Experiment 1) Ball A Ball B Ball B Ball A teflon rod teflon rod Step 1 Step 2 Ball C (Experiment 2) Ball C Ball D Ball D teflon rod Step 1 Step 2 Which of the following does most accurately describe what happens on the metal ball B and D? O Both ball B and D are negatively charged. O Ball B is negatively charged, and ball D is positively charged O Ball B is positively charged, and ball D is negatively charged. o Ball B is negatively charged, and ball D is electrically neutral. o Ball B is positively charged, and ball D is electrically neutral. O Both ball B and D are positively charged. Both ball B and D are electrically neutral. OExplanation / Answer
Ball B and D are electrically neutral
As there is no flow of charge net charge on the spheres will be same
Initially net charge is zero so finally charge should be zero
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.