7. If the resistance connected to a battery is cut in half, what happens to the current through the battery?a) The current is also cut in half.b) The current does not change.c) The current doubles.d) The current is cut to one-fourth.8. A resistor has a current of 2 amperes when connected to a single battery. If a second identical battery is connected in series with the first, what is the current through the resistor?a) Still 2 ampsb) 4 ampsc)1 ampd) no current9. A resistor has a current of 2 amps when connected to a single battery. If a second identical battery is connected in parallel with the first, what is the resistor current?a) Still 2 ampsb) 4 ampsc) 1 ampsd) no current10. If the only voltage you have is 120 volts, how could you light some 6 volt lightbulbs without burning them out?a) Connect 20 bulbs in parallel.b) Connect 20 bulbs in series.c) Short out the 120 volts, and hope enough stray voltage leaks out to light some nearby light bulbs.11. In a circuit with a single lightbulb and a single battery, the current through the bulb is found to be 2 amps. Is the current that flows through the batterya) greater than 2 ampsb) equal to 2 ampsc) less than 2 ampsd) impossible to say12. Two bulbs in series are connected to a bettery. The current in the first bulb is found to be 1 amp What is the current through the battery?a) 1 ampb) 0.5 ampc) 2 ampsd) no current13. Which circuit offers the greater resistance to the battery, two bulbs in series or two bulbs in parallel?a) Two bulbs in seriesb) Two bulbs in parallelc) Same resistance either way

1. In the modern view of electricity, an object with a negative charge has a) An excess of positive charge b) An excess ofnegative charge e) A deciency of negative charge (1) A deciency of positive charge 2. Two charged objects are very far from any other charges. If the distance between them is cut to one-third its original value, what happens to the electric force between them? a) The force is reduced to one-third. b) The force is reduced to one-ninth. c) The force is increased three times. (1) The force is increased nine times. 3. A chlorine ion contains 17 protons, 18 neutrons, and 18 electrons. What is the net charge ot'the ion? (Recall that a proton has a charge of +c). a) -e b) 0 e) +e d) -18e 4. What is the net charge of an iodine ion containing 53 protons, 74 neutrons, and 54 electrons? a) -e c) +e d) -54e 5. When you stack three ashlight batteries in the same direction, you get a voltage of3* l .5 volts = 4.5 volts, What voltage do you get if one of the batteries is turned to face in the opposite direction? a) 0 volts b) 1.5 volts c) 3 volts (1) -4.5 volts 6. If you have four 1.5 volt cells, what voltage would you get it'you wired them in parallel? a) 1.5 volts b) 6 volts C) 0 volts (1) 3 volts