1. A uniform magnetic field points directly into this page. A group of protons are moving toward the top of the page. Wh

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1 A Uniform Magnetic Field Points Directly Into This Page A Group Of Protons Are Moving Toward The Top Of The Page Wh 1 (77.09 KiB) Viewed 21 times

1. A uniform magnetic field points directly into this page. A group of protons are moving toward the top of the page. What can you say about the magnetic force acting on the protons? A. toward the right B. toward the left C. toward the top of the page D. toward the bottom of the page E. directly into the page F. directly out of the page 2. If a point charge is positive, then the magnitude of the electric field due to that point charge A. is zero. B. remains constant with distance. C. increases as the distance increases squared D. decreases as the distance increases squared E. decreases in direct proportion with the distance 3. A wire carries a current of 3.5 mA past a given point in a circuit. How many electrons flow past that point in one minute? A. 2.7 x 106 B. 1.3 x 10 C. 5.2 x 10 D.4.1 x 1019 E. 8.6 x 109 4. A rectangular coil, with comers labeled ABCD, has length L and width w. It is placed between the poles of a magnet, as shown in the figure. If there is a current / flowing through this coil in the direction shown, what is the direction of the force acting on section CD of this coil? A. perpendicular to and into the page B. perpendicular to and out of the page C. in the direction of the magnetic field D. The force is zero. 5. Faraday's law states that there will be an induced potential difference around a loop if A. There is a changing magnetic flux through the loop. B. There is a static magnetic field through the loop. C. An electric field is present. D. Ohm's Law is valid for the system. E. The magnetic field is conserved. 6. In a circuit, a capacitor has potential difference AV and, charge Q, and capacitance C. The potential difference is doubled. The capacitance: A. changes in ways impossible to predict with the given information. B. doubles. C. does not change. D. is divided in half. 7. A transformer changes the 10 kV power line to 120 V. If the primary coil contains 750 turns, how many turns are on the secondary coil? A. 3 B.6 C.9 D. 63000 E.210000