PHYC2122 First Quarter Exam\
PREVIEW:
Which statement is true? Select one: a. All Magnets have the Same shape and Size b. All magnets can attract large objects c. Magnets can not pull through Solids. d. All Magnets have a North and South Pole Feedback The correct answer is: All Magnets have a North and South Pole How do you calculate resistance? Select one: a. Multiply current by voltage b. Multiply voltage and current c. Divide voltage by current d. charge by current Feedback The correct answer is: Divide voltage by current If two balloons have the same charge, what will happen if you place them close to each other? Select one: a. They will be attracted b. They will push each other away. c. They will pop d. Nothing Feedback The correct answer is: They will push each other away. What electrical component measures current? Select one: a. Resistor b. Ammeter c. Thermistor d. Voltmeter Feedback The correct answer is: Ammeter Current is measured in ________ Select one: a. mph b. volts c. watts d. amps Feedback The correct answer is: amps What will happen when these magnets are brought close together? Select one: a. They will attract each other. b. Both magnets will turn to the right c. They will repel each other. d. Both magnets will turn to the left Feedback The correct answer is: They will repel each other. How do you measure potential difference in a circuit? Select one: a. Thermistor b. Battery pack c. Ammeter d. Voltmeter Feedback The correct answer is: Voltmeter Most rocks are magnetic. Select one: True False Feedback The correct answer is 'False'. The South end of a Magnet will_______. Select one: a. Repel to the North End of another Magnet b. Repel to the South end of another Magnet c. Repel to a Copper Nail Feedback The correct answer is: Repel to the South end of another Magnet What is the definition of electrical current? Select one: a. Electrons moving around b. The work done on each coulomb of charge c. The opposition to the flow of electrons d. The rate of flow of charge Feedback The correct answer is: The rate of flow of charge When Magnets push away from each other they__________ Select one: a. Attract b. Repel Feedback The correct answer is: Repel Which two particles are attracted to each other? Select one: a. Two protons b. Two neutrons c. An electron and a neutron d. A proton and an electron Feedback The correct answer is: A proton and an electron The direction of electric field lines shows the___________. Select one: a. all of the above b. direction of the force on a test positive charge. c. . d. size of the field. e. strength of the field. Feedback The correct answer is: direction of the force on a test positive charge. What is the effective resistance for two resistors that each has 15ohm resistance and they are connected in parallel? Select one: a. 7.2ohm b. 7.25ohm c. 7.5ohm d. 7ohm Feedback The correct answer is: 7.5ohm A charge is sitting outside a closed surface. The net flux is_________. Select one: a. half because it passes through two surfaces b. zero because it passes through two surfaces c. squared because it passes through two surfaces d. double because it passes through two surfaces Feedback The correct answer is: zero because it passes through two surfaces Electric field lines are _________________ to the electric field vector at any point. Select one: a. vertical b. horizontal c. perpendicular d. tangent Feedback The correct answer is: tangent 1 ampere of current is defined as _________. Select one: a. one coulomb of charge passing through the surface area in one second b. one coulomb of current passing through the conductor in one second. c. one coulomb of current passing through the surface area in one second. d. one coulomb of charge passing through the conductor in one second Feedback The correct answer is: one coulomb of charge passing through the surface area in one second What subject is attracted to a magnet? Select one: a. Silver b. Iron c. Water d. Metal Feedback The correct answer is: Iron Where is the force of attraction the strongest on a magnet? Select one: a. at the poles b. below the magnet c. in the middle d. above the magnet Feedback The correct answer is: at the poles How is the electric force between two charges affected when both of the charges are cut in half? Select one: a. increase four times b. decreases four times c. increases 2 times d. no change Feedback The correct answer is: decreases four times Electric field lines between two oppositely charged parallel metal plates will be _________. Select one: a. curved lines, evenly spaced b. straight lines, randomly spaced c. curved lines grouped together in small bunches randomly spaced. d. straight lines, evenly spaced Feedback
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