A current I is passed through a wire. A second wire of length L is moving perpendicular to the magnetic field generated by the first wire (see sketch below) with velocity v at a distance d. Consider the magnetic field B to be constant over the range of motion of the second wire (i.e. d » 1). You need to calculate the potential generated between the ends of the second wire. Please select statements that would describe your approach to solving the problem. Wire 1 Wire 2 d V ☐ a. Use the expression for the magnetic force between two current-carrying wires. ☐ b. Use the expression for the magnetic field of a current-carrying wire. О с. Use an expression for the electromotive force (EMF) induced by the magnetic field.

Solve with no calculus.

The figure shows a cross section of three very long parallel wires, eachcarrying a current of 2.0 A. The currents in the top and bottom rightwires are coming out of the page; the current of the bottom left wire isgoing into the page. The length of each leg of the triangle is R = 18.0mm.a) Draw a clear physics diagram of the problem with forces, fields, andimportant angles labeled.b) Find the magnitude and direction of the magnetic force on a 4.0-mlength of the top wire due to the bottom right wire.c) Find the total magnitude and direction of the magnetic force on a 4.0-mlength of the top wire due to the other two wires.d) Find the total magnitude and direction of the magnetic force on a 4.0-mlength of the bottom left wire due to the other two wires.

A circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the magnetic force on the bar in Newtons? Answer to 4 decimal places.

A current I is passed through a wire. A second wire of length L is moving perpendicular to the magnetic field generated by the first wire (see sketch below) with velocity v at a distance d. Consider the magnetic field B to be constant over the range / of motion of the second wire (i.e. d > 1). You need to calculate the potential generated between the ends of the second wire. Please select statements that would describe your approach to solving the problem. Wire 1 Wire 2 d a. Use an expression for the electromotive force (EMF) induced by the magnetic field. b. Use the expression for the magnetic force between two current-carrying wires. C. Use the expression for the magnetic field of a current-carrying wire.

The three conducting rings in the figure are all in the same plane as a long wire. The wire has a current / that is steadily decreasing with time at a constant rate. What can you say about the induced electromotive force in each of the rings A, B, and C? A O No electromotive force is induced in any of the rings. O A counter-clockwise electromotive force is induced in ring A, but a clockwise electromotive force is induced in rings B and C. O A clockwise electromotive force is induced in ring A. Ring B has no induced electromotive force, and ring C has a counterclockwise electromotive force. O All rings have a counterclockwise induced electromotive force. O A counter-clockwise electromotive force is induced in ring A. Ring B has no induced electromotive force, and ring C has a clockwise electromotive force.

The figure shows a cross section of several conductors carrying currents through the plane. The currents have the magnitudes l₁ = 4 A, 1₂ = 6 A and 13 = 2A. The directions of the currents is shown at the picture. Four paths labeled a through d are shown. What is the line integral of the magnetic field across each path? Each integral involves going around the path in the counter clockwise direction. 1. What is the line integral of the magnetic field across path a? Enter the missing part in the expression Ho 2. What is the line integral of the magnetic field across path b? Enter the missing part in the expression Ho'l 3. What is the line integral of the magnetic field across path c? Enter the missing part in the expression Hol 4. What is the line integral of the magnetic field across path d? Enter the missing part in the expression Ho 110 b 120 d ) ) ) )

Consider the following arrangement in the Figure: a) Calculate the magnitude of the magnetic field at point P of the figure in terms of R, I₁, I₂. Express your answer in terms of the variables I1, I2, R, and magnetic constant po. b) What does your expression give when I1=I₂? 2

Magnetic and electric field lines are in many ways similar, with few crucial differences. Which of the properties listed below does NOT apply to both fields? O All of these properties apply to both E and B field lines. The density of lines is proportional to the field strength in that area. Field lines never intersect. Tangent to the line at a point gives you the direction of the field as that point. O Field lines form closed loops.

A loop of wire is perpendicular to a magnetic field. The magnetic field strength as a function of timeis given by the top graph. Draw a graph of the current in the loop as a function of time. Let apositive current represent a current that comes out of the top of the loop and enters the bottom of theloop. There are no numbers for the vertical axis, but your graph should have the correct shape andproportions.