C

Consider the diagram below showing 2 two current loops (a square and circle centered about the same point. If the currents in each loop are in opposite directions and the current in the square loop is 4.10 A, what must the current in the circular loop be if the net magnetic field at the center is zero? Let the radius of the circle be 0.56 m.

Please show work and circle answer on paper

A pair of parallel conducting rails that are L = 12 cm apart lies at right angles to a uniform magnetic field of 0.7 T directed into the page, as shown in the figure below. A R = 17 resistor is connected across the rails. A conducting bar is moved to the right at 2 m/s across the rails. R ww Submit down 1) What is the current in the resistor? (Express your answer to two significant figures.) Submit 2) What direction is the current in the bar (up or down)? • up B, into page Submit Ø O to the left 2 m/s 4) What direction is the magnetic force on the bar due to the induced current? to the right upwards downwards into the page out of the page Submit 3) What is the magnetic force on the bar due to the induced current? (Express your answer to two significant figures.) L mA + mN +