Resistors R1 = 3.0 2 and R2 = 5.0 N are connected to a battery as shown. The current through resistor R2 is 2.0 A. V a) What is the current through resistor R1? b) What is the voltage across the battery? R R2 c) What is the voltage across resistor R2?
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Given
Resistor
Resistor
Current = 2.0A
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- In a circuit consisting of a 9 V battery, about 20 cm of 12-gauge copper wire, and a 60 W light bulb, which of the following correctly describes the motion of charge in the wire? a. The protons move from their initial position in the wire away from the negative terminal of the battery toward the positive terminal of the battery. It would take a proton a short time to travel between the terminals - only a few microseconds. b. The protons are generated in the battery and then move away from the positive terminal of the battery toward the negative terminal of the battery. It would take a proton a long time to travel between the terminals - at least an hour. c. The free electrons move from their initial position in the wire away from the negative terminal of the battery toward the positive terminal of the battery. It would take a free electron a long time to travel between the terminals - at least an hour.A resistor R1 is connected in parallel with a second resistor R2 = 0.5R1. This parallel configuration is then connected in series with R3 = 2R1 and across a cell with voltage V = 9V. What is the potential difference across the parallel resistor pair? Select one: a. 1.29 V b. 1.5 V c. 2.25 V d. 7.5 VExample1: a) A battery has internal resistance r = 0.005 N when it is new. The internal resistance increases to r = 2.0 N when the battery gets old. What happens to the voltage of the ideal battery, ɛ ? Circle one. a Increase I decrease I stays the same Fig A b) What happens to the terminal voltage Vab between points a and b as the battery gets older. Increase I decrease | stays the same