Homework Statement
A long solenoid of radius R, length L (which
is much longer than R), number of windings
N, has a current I that is changing in time at
a rate (dI/dt). What is the magnitude of the
electric eld a distance R=2 from the axis of
the solenoid?
Homework Equations...
Homework Statement
A number 12 copper wire has a diameter of 2.053mm. Calculate the resistance of a 31m long piece of such wire. Use rho=1.72x10-8 Ohm-m for the resistivity of copper.
Homework Equations
This is the part that I am unsure of, all of my equations for resistivity do not...
Homework Statement
Three capacitors having capacitance C1 = 3.00 microF, C2 = 8.50 microF and C3 = 15.0 microF are connected to a 24.0 V battery as shown. Calculate the charge on C3.
Homework Equations
$$ C_{eq}= \left ( \frac{1}{C_1+C_2} + \frac{1}{C_3}\right )^{-1}$$
Q = CΔV
The...
I have two questions!
General: A uniform circular ring of charge Q and radius R is located in the x-y plane, centered on the origin as shown in the figure.
#1 What is the magnitude of the electric field, E, at point P located a distance z above the center ring?
I came up with kQ/(R^2 +...
Homework Statement
A thin, cylindrical copper shell of diameter ds = 2 cm has along its axis a thin metal wire of diameter dw = 7.50 x 10-03 cm. (as shown in the diagram below.) The wire and the shell carry equal and opposite charges of 6.35 x 10-09 C/cm, distributed uniformly. What is the...
Homework Statement
A spherical rain drop carries a charge of 5×10-6 C and has a potential of 8.800×10-8 V at the surface. Find the radius of the drop.
Homework Equations
V = (kQ)/r
The Attempt at a Solution
I simply moved V and r to their respective spots and plugged in my...