In Figure 4, a rod of length L=0.1 m is forced to move along horizontal rails at a constant speed v =5.00 m/s. The rod and rails form a conducting loop with the connecting strip at the right. The rod is known to have a resistance 0.4 92, rest of the loop has negligible resistance. The conducting loop is placed into a magnetic field generated by the long straight wire at distance a=0.01 m from the loop. Find the magnitude of the force that must be applied externally on the rod to make it moving with constant speed.

A metal strip 5.00 cm long, 0.800 cm wide, and 0.700 mm thick moves with constant velocity through a uniform magnetic field B = 1.00 T directed perpendicular to the strip, as shown in the figure. A potential difference of 4.70 mV is measured between points x and y across the width of the strip. Calculate the speed v (in m/s). Hint: How fast are the electrons moving through the magnetic field? Give your answer as only the numerical value in the SI units specified. e is interpreted as x10^ for use with large or small values; 1.01e2 is interpreted as 1.01 x 102. B

A conducting loop is in the shape of a square of side ℓ. Current I flows clockwise through the loop. A conducting loop in the shape of a square of edge length ℓ = 480m carries a current I = 10.4 A as in the figure above. Calculate the magnitude and direction of the magnetic field at the center of the square. If this conductor is reshaped to form a circular loop and carries the same current, what is the value (magnitude and direction) of the magnetic field at the center?

A point charge Q moves on the x-axis in the positive direction with a speed of 280 m/s. A point P is on the y-axis at y=+70 mm. The magnetic field produced at the point P, as the charge moves through the origin, is equal to 0.3 µT along the negative z direction. What is the charge Q? * (µ0 = 4x × 10-7 T•m/A) 4r × 10-7 T• m/A) -53 μC +53 μC -39 μC +39 μC +26 μC

A rectangular conducting loop has sides a = 0.065 m, sides b = 0.15 m, and resistance R = 55 Ω. It moves into a magnetic field of magnitude B = 0.81 T with speed v = 5.5 m/s. Refer to the diagram. A) Find the current, Ii, in amperes, flowing in the loop as it enters the magnetic field.  B)  Find the current, If, in amperes, in the loop as it leaves the magnetic field. It leaves at the same speed it enters.

hard plase

A metal strip 9.11 cm long, 0.864 cm wide, and 0.660 mm thick moves with constant velocity through a uniform magnetic field B = 1.77 mT directed perpendicular to the strip, as shown in the figure. A potential difference of 4.29 μV is measured between points x and y across the strip. Calculate the speed v. Number i Units X X

Consider a straight conductor of length 6.3 cm. The conductor moves at right angles to a magnetic field of uniform strength B = 10-3 T generating e.m.f. of 2.5 × 10-5 v. Calculate the velocity of the straight conductor. Give your answer in SI units. Answer: Choose... + Next page Previous page

In the figure (Figure 1) a conducting rod of length L = 31.0 cm moves in a magnetic field B of magnitude 0.480 T directed into the plane of the figure. The rod mc with speed v = 5.30 m/s in the direction shown. Figure X X X X X b X χαχ X X 1 of 1 X X X What is the potential difference between the ends of the rod? Express your answer in volts. NO | ΑΣΦΑ ▼ V = Submit Part B Which point, a or b, is at higher potential? b Submit Part C Request Answer E = Submit Request Answer When the charges in the rod are in equilibrium, what is the magnitude of the electric field with Express your answer in volts per meter. VG ΑΣΦΑ V Request Answer V/m

The two conducting rails in the drawing are tilted upward so they each make an angle of 30.0° with respect to the ground. The vertical magnetic field has a magnitude of 0.040 T. The 0.29-kg aluminum rod (length - 1.6 m) slides without friction down the rails at a constant velocity. How much current flows through the rod? Number i Conducting Units 16m-