
College Physics
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2) A potentiometer is a variable resistor that can be adjusted given the needs of the application. For a 24-volt circuit compute the resistance that should be set to obtain the following current levels:
a) 2 Amperes
b) 3 Amperes
c) 8 Amperes
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- 2. Three resistors, each with resistance R1, are in series in a circuit. They are replaced by one equivalent resistor, R. Comparing this resistor to the first resistor of the initial circuit, which of the following is true? A) The current through R equals the current through R1. B) The voltage across R equals the voltage across R1. C) The power given off by R equals the power given off by R1. D) R is less than R1. E) None of the abovearrow_forwarda) What is the equivalent resistance in this series circuit? b) What is the current in this circuit? c) What is the Power in amps used in this circuit. Recall P = I V, where P is power in Watts, I is current in Amps and V is voltage in Volts.arrow_forwardWhich of the following statements regarding circuit elements in Series is FALSE? Group of answer choices A.The circuit elements are all along the same path B.The circuit elements must all have the same current C.The circuit elements must all have the same voltagearrow_forward
- 2a) What is the equivalent resistance if all three resistors are connected in parallel across the 12 Volt battery? 2b) What is the current through the battery when the 2c) What is the current through the 20 resistor resistors are connected in parallel? when the resistors are connected in paralleľ?arrow_forwardSeries Circuits 8. In this circuit, three resistors receive the same amount of current (4 amps) from a single source. Calculate the amount of voltage "dropped" by each resistor, as well as the amount of power dissipated by each resistor. 192 202 www 392 24 voltsarrow_forwardConsider the circuit in the diagram, with sources of emf listed below.Randomized Variablesℰ1 = 25 Vℰ2 = 46 Vℰ3 = 2.5 Vℰ4 = 31 V a.) Find I1 in amps. b.) Find I2 in amps. c.) Find I3 in amps.arrow_forward
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