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10. A wire is wrapped around a nail. If you are looking at the point of the nail the current is flowing in a clockwise direction, which end of the nail is the N-pole of the electromagnet created? (a) head (b) point [c] the middle of the nail

10. A wire is wrapped around a nail. If you are looking at the point of the nail the current is flowing in a clockwise direction, which end of the nail is the N-pole of the electromagnet created? (a) head (b) point [c] the middle of the nail

College Physics
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter22: Magnetism
Section: Chapter Questions
Problem 83PE: Integrated Concepts (a) What is the direction of the force on a wire carrying a current due east in...
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9. A Volt is a unit of: [a] voltage [b] resistance [c] current [d] power 10. A wire is wrapped around a nail. If you are looking at the point of the nail the current is flowing in a clockwise direction, which end of the nail is the N-pole of the electromagnet created? [a] head [b] point [c] the middle of the nail 11. The reason a baseball player follows through when hitting the ball is to: [a] increase the force of the bat [c] increase the momentum on the ball [b] increase the impulse of the ball 12. Electrical appliances, lights, and the like in our homes are connected in: [a] series (b) parallel [c] both in series and in parallel 13. When resistors are put in series with cach other, their overall resistance is: [a] larger than that of any individual resistor [b] the same as the average resistance of the resistors [c] smaller than the resistance of any of the resistors individually 14. What is the force on an electron traveling South at 3500 m's through a 3T magnetic field directed north. [a] 0N [b] 1.68 N [c] 1.68 x 1015 N 15. According to Ohm's law (by definition): [a] P = IR [b] V -1/R [c) V = IR [d] R =IV 16. A rifle is fired and a 0.2 kg bullet is released at a velocity of 300 m/s. What is the recoil velocity of the gun? (what is the best setup in order to solve this problem?) [a] mivi = mivir+ m;v (b] m V = m:vr [c]0= mivir+ [d] Ft=mav 17. If a bicycle and a more massive parked car have a head-on collision, the force of impact is: [a] equal for the bicycle and car (c) greater for the car [b] greater for the bicycle 18. What is the resistance of a toaster that uses 120 A when connected to a 240V power source? (a] 240 ohms [b] 120 ohms [c] 60 ohms [d] 2 ohms 19. In a parallel circuit: (a) voltage across cach branch is always the same (b] current through cach branch is always the same [c] the resistance of cach resistor is the same
Transcribed Image Text:9. A Volt is a unit of: [a] voltage [b] resistance [c] current [d] power 10. A wire is wrapped around a nail. If you are looking at the point of the nail the current is flowing in a clockwise direction, which end of the nail is the N-pole of the electromagnet created? [a] head [b] point [c] the middle of the nail 11. The reason a baseball player follows through when hitting the ball is to: [a] increase the force of the bat [c] increase the momentum on the ball [b] increase the impulse of the ball 12. Electrical appliances, lights, and the like in our homes are connected in: [a] series (b) parallel [c] both in series and in parallel 13. When resistors are put in series with cach other, their overall resistance is: [a] larger than that of any individual resistor [b] the same as the average resistance of the resistors [c] smaller than the resistance of any of the resistors individually 14. What is the force on an electron traveling South at 3500 m's through a 3T magnetic field directed north. [a] 0N [b] 1.68 N [c] 1.68 x 1015 N 15. According to Ohm's law (by definition): [a] P = IR [b] V -1/R [c) V = IR [d] R =IV 16. A rifle is fired and a 0.2 kg bullet is released at a velocity of 300 m/s. What is the recoil velocity of the gun? (what is the best setup in order to solve this problem?) [a] mivi = mivir+ m;v (b] m V = m:vr [c]0= mivir+ [d] Ft=mav 17. If a bicycle and a more massive parked car have a head-on collision, the force of impact is: [a] equal for the bicycle and car (c) greater for the car [b] greater for the bicycle 18. What is the resistance of a toaster that uses 120 A when connected to a 240V power source? (a] 240 ohms [b] 120 ohms [c] 60 ohms [d] 2 ohms 19. In a parallel circuit: (a) voltage across cach branch is always the same (b] current through cach branch is always the same [c] the resistance of cach resistor is the same
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