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- Please just help with this question: What would be the terminal velocity of the rod if all the conditions of part (b) of the problem where held, except there was also friction with a kinetic coefficient of ?k=0.0215? (Note: I believe the answer for b) is the induced current of 0.049 A if it helps)The potential difference V(t) between parallel plates shown above is instantaneously increasing at a rate of 107 V/s. What is the displacement current between the plates if the separation of the plates is 1.00 cm and theyhave an area of 0.200 m2 ?If electric and magnetic field strengths vary sinusoidally in time at frequency 1.00 GHz, being zero at t=0, then E=E0sin2ft. (a) When are the field strengths next equal to zero? (b) 4Jhen do they reach their most negative value? (c) How much time is needed for them to complete one cycle?
- A current loop with magnetic dipole moment is placed in a uniform magnetic field , with its moment making angle θ with the field. With the arbitrary choice of U = 0 for θ = 90°, prove that the potential energy of the dipole-field system is .A spatially uniform magnetic field is restricted in a circular region of spacewith radius of 2.5 cm and has a constant direction; see figure below. If themagnetic field varies with time t as B(t) = (25 mT/s^2)t^2, what is the magnitude of the induced electric field at a distance of 4.00 cm from the center of the magnetic field region at t = 2 s?Consider Farday’s Law and Ampere’s Circuital Laws. By expanding both of these curl equations and using the direction of the electric field component -y, what is the direction of the magnetic flux density vector B and the magnetic field intensity vector H?
- Write the function for the torque as a function of angle theta, on a 50-turn square loop of a wire of 15.0 cm on a side that carries 20.0 A of current in a 2.00 T magnetic field if the inital torque is zero at an angle of 0 radians. a) What would be the values of the torque at angles Pi/4, Pi/2, 3Pi/4, Pi, 5Pi/4, 3Pi/2, 7Pi/4, and 2Pi? b) Sketch your torque function vs angle in radians from 0 to 2Pi using your values you calculated in part a.In figure below, the magnetig flux through the circular loop of radius r = 1.8 m increases according to the relation ΦB = 5 t2 + 5t + 3, where ΦB is in Webers and t is in seconds. What is the magnitude and direction (clockwise or counterclockwise) of the induced current in the circular loop at t = 1.5 s if the loop has a total resistance of R = 12 Ω? (Choose clockwise direction as the positive and express the direction of the current by using plus or minus signs in the result, which must be in units of Amperes and include 2 digit after the decimal point. That means if you get a result of 9.22 and the direction of the current is clockwise, just type 9.22 or if you find the direction of the current to be counterclockwise, just type -9.22 in the answer box. Maximum of 5% of error is accepted in your answer.)Multiple-choice question: As shown in the figure, there is an infinitely long flat conductor piece of width a and regardless of thickness, through which a uniformly distributed current I flows, and is on the right side of the conductor pieceThere is a point P coplanar with the conductor sheet at edge b, then the magnetic induction intensity B of point P is
- A long, rectangular loop of width w, mass m, and resistance R is at rest, with the plane of the loop parallel to the ground. Immediately to the left of the loop is a region of uniform magnetic field B→ that points out of the screen. At time t=0, a constant force F→ pushes the loop to the left, into the magnetic field region, as shown in the figure. Derive an expression for the speed v of the loop immediately after it enters the magnetic field region in terms of the given variables and the time t.A moveable (massless and frictionless) bar with a length of L = 11/50 m is being moved at a constant velocity of 62/10 m/s from left to right along two conducting rails by an external force, F, as shown inthe Figure. If the system is immersed in a uniform magnetic field (out of the paper) with magnitude11/100 Tesla, What is the induced current and its direction of the loop if the resistance is 11/5 Ω ?The figure shows a circular region of radius R = 3.50 cm in which an electric flux is directed out of the plane of the page. The flux encircled by a concentric circle of radius r is given by ΦE,enc = (0.553 V·m/s)(r/R)t, where r ≤ R and t is in seconds. What is the magnitude of the magnetic field that is induced at radial distances (a)2.50 cm and (b)7.50 cm? I need to solve it.
