MAGNETOSTATICS A hollow sphere of radius R centered at the origin is covered with a uniform...
A hollow sphere of radius a has uniform surface charge density σ and is centered at the origin. It sits inside a bigger sphere, also centered at the origin, with radius b > a and uniform surface charge density −σ. Because of the spherical symmetry, the electric field will have the form () = E(r) r̂, where negative E(r) corresponds to an electric field pointing towards the origin, and positive E(r) corresponds to a field pointing away. What is E(r)...
A sphere of radius R is centered at the origin. A constant magnetic field of magnitude B is in the +k direction. What is the value of the magnetic flux that passes through the hemispherical surface that has z<0? (This is the half of the surface of the sphere in the region z<0.) Define the flux to be positive if it points from the inside of the sphere to the outside. a) 2 B b) -2B c) - TPB d)...
Summary 583 Bridging Problem An imaginary sphere of radius R is centered at the origin, as shown in Pigure 17,37. A charge q is rigidly fixed to the x axis at +R/2 and a second charge g is at-R2. Finally, a proton (of mass and charge te) is released from rest oa the y axis. in terms of e, m, R of the proton at the moment it is released from y +R/4. (b) What are the magnitude and direction...
A conducting sphere with radius R is centered at the origin. The sphere is grounded having an electric potential of zero. A point charge Q is brought toward the sphere along the z- axis and is placed at the point ะ-8. As the point charge approaches the sphere mobile charge is drawn from the ground into the sphere. This induced charge arranges itself over the surface of the sphere, not in a uniform way, but rather in such a way...
5. A sphere of radius R contains a uniform charge density p and is centered at the origin. It also contains a spherical cavity of radius a with its center located at br, where b + a〈 R. Show that the field in the cavity is constant, and find its value. (Hint: Use superposition)
A circular loop of radius r is rotating in a uniform external magnetic field of B. Find the magnetic flux through the loop due to the external field when the plane of the loop and the magnetic field vectors are oriented at 3 different angles, θ. The coil in an ac generator of frequency f has N turns, each having an area A and is rotated in a uniform magnetic field B. What is the peak output voltage of this...
2. Consider the circle of radius 9 centered at the origin in the ry-plane. It can be described by the equation 2 +y2 81. The sphere of radius 9 centered at the origin can be created by rotating the curve y v81- about the a-axis. (a) The volume of the sphere can be calulated using a definite integral. Set up that definite integral, but do not solve it. (b) Complete the calculation of the integral. 2. Consider the circle of...
A hollow, thin-walled sphere of mass 12.0 kg and diameter 0.50 m is rotating about an axle through its center. The angle (in radians) through which it turns as a function of time (in seconds) is given by f(t) = At 2 + Bt 4, where the magnitude of A =1.50 and B has numerical value 1.10. (a) What are the units of the constants A and B? (b) for time t=4s find (i) the angular momentum of the sphere...
A hollow insulating sphere of inner radius "a" and outer radius "b" has a non-uniform charge per unit volume p that varies with distance r from the center of the sphere according to the expression p=Cr^2, where C is a given constant. a) what is the total charge Q contained in the hollow sphere b) what is the electric field at a point inside the sphere, a< r < b
5. A uniformly charge solid sphere, of radius R and total charge Q, is centered at the origin and spinning at a constant angular velocity w about the 2-axis. Find the current density J at any point (r, 0,0) within the sphere.