A small aluminum sphere of radius carrying a charge
of is placed at the center of a gold spherical shell of
inner radius and outer radius .
This is one of the harder
questions - additional hints are
available on clicking the 'Show Answer' button.
a) Find the electric potential of the gold
shell with respect to zero potential at infinity.
Hint: Think about what we know about conductors. Referring to
the text after Q7.50 might help. Give your answer to three
significant figures.
b) How much charge should you put on the
gold shell if you want to make its potential ?
Hint: Remember that we know how and are
related, and that we can find using Gauss' law. Give
your answer to two significant figures.
- A Small Aluminum Sphere Of Radius Carrying A Charge Of Is Placed At The Center Of A Gold Spherical Shell Of Inner Radi 1 (79.55 KiB) Viewed 138 times
WQ7.54: Review
Question 2/2 points (graded) A small aluminum sphere of radius 0.5 cm carrying a charge of -22 nC is placed at the center of a gold spherical shell of inner radius 20 cm and outer radius 22 cm. This is one of the harder
questions - additional hints are available on clicking the 'Show Answer' button. a) Find the electric potential of the gold shell with respect to zero potential at infinity. Hint: Think about what we know about conductors. Referring to the text after Q7.50 might help. Give your answer to three significant figures. 8.99*10^9*-22*10^-9/0.22 V ✔ 8.99-10-22-10-⁹ 0.22 b) How much charge should you put on the gold shell if you want to make its potential 100V? Hint: Remember that we know how V and E are related, and that we can find E using Gauss' law. Give your answer to two significant figures. 24.44 nC ✔ 24.44 提交 Show answe ♥ 正确 (2/2 分)