1. A wire of total resistance 0.030 is bent into a triangular loop shown below, and is being pulled out of a region containing a 2.0 T uniform. magnetic field at a speed of 20 cm/s. An isosceles right triangle (leg 10 cm) leaving a magnetic field B= 2.0T 450 B = 0 10 cm √20cm/s a. Calculate the magnetic flux through the loop as a function of t, where t is the time since the triangular loop first emerges from the field. (Hint: What is x(t)?) b. Calculate the current in the loop at t = 0.20s. In which direction is the current?

A small circular coil of 20 loops of wire having a radius of 1 cm is at rest in the X-y plane (so the normal to the loop points in the +z-direction). A uniform magnetic field of 0.5 T is turned on in the +x-direction. What is the magnetic flux through the loop? a. 7.85 x 10 Tm² b. 1.57 x 10 4 T m² O c. 3.14 x 10 3 T m2 O d. 0 T m2

A circular closed, conducting loop of radius r is in the presence of a uniform magnetic field that points into the page, shown in the figure below. The strength of the magnetic field changes as a function of time, which is described by the following expression: B(t) = B1t? + Bo. You may assume that B1 and Bo are both positive numbers. The direction of the magnetic field stays constant. The total resistance of the conducting loop is R. Use this information to solve parts (a) - (d). Write your answers in terms of known quantities such as: r, R, B1, Bo, and t. B(t) = B,t? + Bo %3D R r (a) Write an expression for the magnetic flux through the loop, assuming that the area vector of the loop points out of the page. Is the flux increasing or decreasing over time? (b) Determine the magnitude of the induced electromotive force driven through the loop. (c) Determine the magnitude of the induced current driven through the loop. (d) In which direction does the induced current flow (clockwise or…

N circular loops of conducting wire of radius 3.0 cm carries a current of 10 A. If the magnetic field at the center of the multiple turns of loop is 3.14 x 10-3 T, how many turns of loop are in the conducting coil?   a. 15   b. 10   c. 30   d. 20   e. 25

A. What is the current in the current loop? B. What is the current density J in the current loop? C. To decide whether this is a large or a small current density, find the ratio of the current density J in the current loop to the current density of a 8.0 A current in a 1.6- mm diameter wire. Express your answer using two significant figures.

A stationary square coil of area 0.1 m2 is brought over time of 2 s into the magnetic field 8.8 T with its plane perpendicular to the magnetic field. The coil has 1317 turns. Calculate the magnetic flux linkage through the coil. Give your answer in Sl units. Answer: Choose... +

The rod shown in the accompanying figure is moving through a uniform magnetic field of strength B = 0.85 T with a constant velocity of magnitude v = 4.5 m/s. What is the potential difference between the ends of the rod? Which end of the rod is at a higher potential? T. 5.0 cm Hint a. The magnitude of the potential difference between the ends of the rod is V. b. The Select an answer v of the rod is at a higher potential. Hint for (b)

Question 8