In the following figures, each conductor carries 2.0 A of current into or out of the page. Draw a loop in the figure that encloses a net current of +4.0 A. (i) (ii) An integration loop has been drawn for you. What direction should the integration path be so that 6 B · di is equal to –240? Be sure to indicate the direction of the loop. A. Clockwise B. Counterclockwise C. Neither

A small, 1.80-mm-diameter circular loop with R=1.00×10−2ΩR=1.00×10−2Ω is at the center of a large 120-mm-diameter circular loop. Both loops lie in the same plane. The current in the outer loop changes from +1.0A to -1.0A in 0.100 what is resistance ?

Four wires meet at a junction. In two of the wires, currents I1 = 1.35 A and I2 2.03 A enter the junction. In one of the wires, current I3 = 6.37 A leaves the junction. Find the current magnitude in the fourth wire, I4, and indicate its direction. direction: I4 = A undetermined out of the junction O into the junction

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S magnet retort stand coil voltmeter 18. What should the plot of potential (V) vs time (t) look like? * V V V V A B C D E A E B.

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A battery with E = 5.10 V and no internal resistance supplies current to the circuit shown in the figure below. When the double-throw switch S is open as shown in the figure, the current in the battery is 1.00 mA. Wwhen the switch is closed in position a, the current in the battery is 1.22 mA. When the switch is closed in position b, the current in the battery is 1.98 mA. R1 R2 R2 (a) Find the resistance R,. kN (b) Find the resistance R,. kn (c) Find the resistance R,.

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1) A 5.50 m length of 1.9 mm -diameter wire carries a 780 mA current when 23.0 mV is applied to its ends. The drift velocity is 1.2×10−5 m/s Part D Determine the electric field inside the wire. Express your answer to two significant figures and include the appropriate units. Part E Determine the number n of free electrons per unit volume. Express your answer using two significant figures.

Physics students, wanted to investigate the forces of attraction (F) between two parallel conductors carrying currents li and l2 (also known as Ampere's Law) The students noticed that as the length of the parallel conductors (/) was increased the force of attraction between the conductors (F) also increased. The data collected is in the |L= SA conductor 1 average separation (d = 0.50m) table: conductor 2 Length, / (m) Force, F (x 10-5 N) 12= 5A 1.00 9.00 1.20 10.8 1.40 12,5 1.60 14.2 1.80 16.2 (iii) On the grid plot the force and length values from the table. (iv) Draw the line of best fit (v) Find the slope of the line of best fit. (c) Use the slope calculated and the Ampere's Law equation to determine the experimental value of the magnetic force constant, k.