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# pq05ans - a What is the potential at point A V A = 12 V...

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PHYS-1200 PHYSICS II FALL 2004 Post Quiz 5 Name____ ANSWERS _______________________ Consider the figure below. It shows an ideal battery in series with a light bulb. Light bulb 1. The light bulb has a resistance of 25 Ohms and the voltage is 12 Volts. a) What is the current at point A? i = E / R = 8 V/25 i A = 0.48 A units b) What is the current at point B? The current is the same throughout the circuit. i B = 0.48 A units 2. The potential is taken to be 0.0V at the negative terminal of the battery.
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Unformatted text preview: a) What is the potential at point A? V A = 12 V units b) What is the potential at point B? V B = 0 V units 3. Which of the following would reduce the current through the bulb? (Circle the correct choice.) Adding another bulb in parallel with the existing bulb. Adding another bulb in series with the existing bulb. Either adding another bulb in parallel or adding another bulb in series. Neither adding another bulb in parallel nor adding another bulb in series...
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