7. The metal bar is moved to the left in the region of a magnetic field B that is directed out of the page, as shown in

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7 The Metal Bar Is Moved To The Left In The Region Of A Magnetic Field B That Is Directed Out Of The Page As Shown In 1 (36.25 KiB) Viewed 33 times

7. The metal bar is moved to the left in the region of a magnetic field B that is directed out of the page, as shown in figure below: What is the direction of the induced current? a. Clockwise. b. Counterclockwise. c. There is no induced current here because there is no voltage battery connecting the metal bar. d. Can't tell without knowing the length of the metal bar. 8. The metal bar is moved to the left in the region of an already existing magnetic field that is not shown here. If there is induced current flowing through the bar in a counter-clockwise direction, as shown in figure below, what is the direction of the already existing magnetic field in this region? a. Up. b. Down. c. Into the page. d. Out of the page. e. Can't tell without knowing the length of the metal bar and strength of the magnetic field. 9. Two long, straight wires lie parallel to each other, as shown in figure below. Wire 2 1=10 A What is the magnetic field at point P? a 20 μT into the page. b. 20 μT out of the page. c. 40 μT into the page. d. 40 μT out of the page. Zero. e. 5 cm Wire 1 I=SA