Electricity and Magnetism Answers

What is the total charge on an infinite wire carring a charge density

λ =

1

|x|+α where α is a cosntant.

A rectangular loop of wire is ℓ

ℓ = 800 mm

mm long and w

w= 500mm

mmwide. You bend the ℓ

ℓ sides into a semicircle while keeping the w

w sides straight, as shown in (Figure 1), and then move the curved loop at speed v

vv= 0.900m/s

m/s into a uniform magnetic field of magnitude B

BB= 0.600T

T. One of the sides labeled w

w is the leading edge of the moving loop, and the magnetic field direction is perpendicular to the plane CDEF What is the value of the emf induced in the loop?

find dipole and quadruple moments of a cube of side a carrying a total charge Q which is uniformly distributed for a cube centered at the origin

what is total charge on an infinite wire carrying a charge density "\\lambda"=1/"\\mid" x"\\mid" +"\\alpha" where "\\alpha" is a constant find electric potential at a point whose perpendicular distance from the wire at x=0 is R

Find the electric field in a charge free region if it is pointing along the z-direction repeat this for a region having a charge density.

A wire is connected to a battery with a voltage of 5 V. Its resistance is 100 Ohms. What is current flowing?

The magnetic eld of an electric charge q is given by B =

0

4

qv sin 

r2 . From this equation, we can

deduce that

(a) The magnetic eld is only created by a moving charge.

(b) If the angle  is zero, then the magnetic eld is also zero. [3]

(c) The magnetic eld decrease as r decreases.

(d) If the charge increases, the magnetic eld decreases.

(e) None of the above.

An electro scope is negatively charged. A positively charged body is brought near the knob. What do you observe? What if the body was negativly charged

1. Calculate the potential that exists between points A and B shown in the given figure if q1=+5*10^-6 C and q2= -4*10^6 C. 

Determine the electric field E at the origin O due to the two charges A and B.