Homework Help is Here – Start Your Trial Now!
Science
Advanced Physics
and fur • A metallic ball suspended by a thread A. Hold the rod in its position outside the cup as near as possible to the ball inside the cup. Slowly lower the cup and remove it, leaving the distance between the rod and ball abo

and fur • A metallic ball suspended by a thread A. Hold the rod in its position outside the cup as near as possible to the ball inside the cup. Slowly lower the cup and remove it, leaving the distance between the rod and ball abo

icon
Related questions
Question
Gauss’ Law has an important practical application. Imagine a solid conducting object which may be in a strong electric field. If all excess charge is on the surface of the conductor and if there is no electric field inside the conductor, then it should be possible to remove any conducting material from the interior without changing the location of the charges or the electric field inside. This will leave a hollow metallic shell which has no electric field inside it. There is no electric field inside even if there is a strong field outside: the conducting shell acts as a “shield” against electric fields. Furthermore, the hollow shell can have holes in it or even be made of a wire mesh and still retain its shielding property. Such a space surrounded by a conductor is called a “Faraday cage”. Materials : • A metal cup • A hard plastic rod and fur • A metallic ball suspended by a thread A. Hold the rod in its position outside the cup as near as possible to the ball inside the cup. Slowly lower the cup and remove it, leaving the distance between the rod and ball about the same. What happens when the cup is removed? Explain in your own pictures and words how the metallic cup manages to shield the ball from the electric field of the rod. B. Suppose that the cup is used to shield the ball while not being allowed to contact your bare hand or other electrical conductor. (Perhaps you wear a rubber glove or hold it with a non-conductor) Will the shielding effect be the same? Before you try it predict what will happen and explain why. C. Try the experiment without touching the can with your hand or any other electrical conductor. Was your prediction verified or not?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer