50. A straight, stiff wire of length 1.00 m and T=0 T=0 mass 25 g is sus- pended in a magnetic field B = 0.75 T. The wire is connected to 1.00 m an emf. How much current must flow in the wire and in what direction so that the wire is sus- pended and the tension in the supporting wires is zero?

5. A rectangular loop of wire (length L=13.0 cm and width W=7.80 cm) is moving as shown in the drawing with a speed of 1.00 m/s. The loop is leaving a region in which a 2.80 T magnetic field exists; the magnetic field outside this region is zero. During a time of 0.13 s, what is the magnitude of the change in the magnetic flux? Wb XXXX XXX XXXXXXXXX xxxxxxxxx xxxxxxxxx XXXXXXXXX XX

You have a closed square loop of wire with length 44cm and a resistance of 750Ω. If there is a magnetic field of strength 0.2T going perpendicular through the loop at what rate (in T /s) does the magnetic field have to change in order to have a current of 0.2A through the loop?

5. A rectangular loop of wire (length L-13.0 cm and width W=7.80 cm) is moving as shown in the drawing with a speed of 1.00 m/s. The loop is leaving a region in which a 2.80 T magnetic field exists; the magnetic field outside this region is zero. During a time of 0.13 s, what is the magnitude of the change in the magnetic flux? X 0.0284Wb 109 33.269 80 F2 ост 11 Q F5 F5 XXXX XXXXXXX XXXXXXXXX XXXXXxxxxx XXXXXxxxx X: x x x x x xxxx XXXXXXXXX F6 tv MacBook Air & С F6 A AA F7 DII F8 V DII FB СС F9 A F9 Show my other submissions 9 F10 W . F10 d) F11 P 4 F11 F12

A piece of copper wire has a resistance per unit length of 8.70 x 10 o/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.146 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil. Number Units

A thin metal rod has a mass of .024kg and is connected to two parallel rails. The rod can slide left or right. The distance between the two parallel rails is 0.0256m. The is a magnetic field that is perpendicular to the plane of the parallel rails coming out of the page with a magnitude of 0.0563T. The rails are connected by a thin wire. When a current of 0.00913A through the wires(and rod) what is the magnitude of the force and direction of the moving bar?

The magnetic field perpendicular to a single wire loop of diameter 10.0 cm decreases from 0.50 T to zero. The wire is made of copper and has a diameter of 2.0 mm and length 1.0 cm. How much charge moves through the wire while the field is changing?

3. A 21.0 cm diameter coil consists of 34 turns of cylindrical copper wire 2.80 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 8.50 × 10−³ T/s. Determine the current in the loop in milli-amps (the resistivity for copper is 1.72 × 10-³2.m). mA

You've decided to make a magnetic projectile launcher for your science project. An aluminum bar of length l = 5.19 cm slides along metal rails through a magnetic field B = 0.664 T. The switch closes at t = 0 s , while the bar is at rest, and a battery of emf = 16.50 V starts a current flowing around the loop. The battery had internal resistance, r = 0.139 Ω. The resistance of rails and the bar are effectively zero. What is the terminal speed (in m/s) of the bar?

9. A rectangular loop of wire (width W=9.00 cm) is moving as shown in the drawing with a speed of 1.70 m/s. The loop is leaving a region in which a 2.2 T magnetic field exists; the magnetic field outside this region is zero. During a time of 0.30 s, what is the magnitude of the change in the magnetic flux? Wb oof19 0of1 XXX XX Xx xX XX X X x x X XxXx xxxX XX X x x x x X XX X X XXXX X oof19.0of19.0of19.0of19.0om Xx x x X xx xx oof19 o 19 0of19 F19.0019 0of19 oof19 oof19.o 19 0of19 oof19.oof19.0of