70. If the average power dissipated by an electric light is 150 W, what is the maximum power? 67. An object that is magnetic has c. an east-seeking pole and a west-seeking pole only a south-seeking pole d. a north-seeking pole and a south-seeking pole only an east-seeking pole 70. 67. 68. The primary coil of a transformer has 725 loops and is connected to a 120.0-V source. How many loops would be needed in the secondary coil to supply 555 V? 71. The current is greatest in a closed loop of conductor when the loop's motion is magnetic field. the slow and perpendicular to fast and perpendicular to slow and parallel to fast and parallel to 71. 72. The potential differences across alternating-current circuits may be increased or decreased by induced EMF transformers secondary coils primary coils 69. 7. A wire is connected across a circuit with 5.50 $2 of resistance. If 1.12 m of the wire is moving perpendicularly through a magnetic field of 0.250 T and the resulting current through the wire is 1.34 x 102 A, what is the speed of the wire? For Question #73, write true or rewrite the italicized part to make the statement true. 73. An electric generator converts thermal energy to electrical energy. 73