Electricity and Magnetism Answers

A long copper wire with radius of 1.0 mm carries a uniform surface charge density of 5.0 x 10^-6 C/m².

a. Find the total charge in a 1.0-meter-long section of the wire.

b.. Find the magnitude of the electric field at a distance of 15 cm from the wire.

A loop of area 8.0cm is in constant magnetic field of B 0.15 T what is the magnetic flux through the loop when the loop is perendicular to the field?

A monochromatic light ray with the wavelengths of 600nm disperses in glass with a refractive index of 1.5. Find the wavelength of the light ray in the glass

prove divD= volume charge density using gauss law .Also find the capacitance of two concentric spherical metal shells radii a and b.

Calculate the force (magnitude and direction) on

the charge q in the diagram where q = 3.0 μC.

Please check the document for question: https://docs.google.com/document/d/1v7fAIfShqOjC-7pKGqlwPMHSbH-vx0TDznvnKmFtre4/edit?usp=sharing

Ans: 90 N to the right

What is the magnitude of a point charge that would create an electric field of 1.00N/C at points 1.00 m.

Consider a series circuit including a 4Ω, a 16mH-inductor, and a power supply of 9 volts.

How many times constant does it take for the current to reach 99.9% of its final value?

1. a Calculate the force between two charges q1 of

2.0 μC and q2 4.0 μC separated by r = 5.0 cm. (Ans: 29 N)

b Let the force calculated in a be F. In terms of F

and without further calculations, state the force

between these charges when:

i the separation r of the charges is doubled (Ans: F/4)

ii q1 and r are both doubled (F/2)

iii q1, q2 and r are all doubled. (F)

Please explain how these problems were solved.

Consider a series circuit including a 4Ω, a 16mH-inductor, and a power supply of 9 volts.

Find the current in the circuit 100μs after the switch is closed?