1-What happens to the total resistance in a series circuit as more resistors are added in series? 2-What happens to the total current in a series circuit as more resistors are added in series?
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1-What happens to the total resistance in a series circuit as more resistors are added in series?
2-What happens to the total current in a series circuit as more resistors are added in series?
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- The rather simple circuit shown below is known as a voltage divider. The symbol consisting of three horizontal lines is represents “ground” and can be defined as the point where the potential is zero. The voltage divider is widely used in circuits and a single voltage source can be used to provide reduced voltage to a load resistor as shown in the second part of the figure, (a) What is the output voltage Vout of circuit (a) in terms of R1,R2,andVin (b) What is the output voltage Vout of circuit (b) in terms of R1,R2,RLandVinA battery with an internal resistance of 10.0 produces an open circuit voltage of 12.0 V. A variable load resistance with a range from 0 to 30.0 is connected across the battery. (Note: A battery has a resistance that depends on the condition of its chemicals and that increases as the battery ages. This internal resistance can be represented in a simple circuit diagram as a resistor in series with the battery.) (a) Graph the power dissipated in the load resistor as a function of the load resistance. (b) With your graph, demonstrate the following important theorem: The power delivered to a load is a maximum if the load resistance equals the internal resistance of the source.Why is the following situation impossible? A technician is testing a circuit that contains a resistance R. He realizes that a better design for the circuit would include a resistance 73R rather than R. He has three additional resistors, each with resistance R. By combining these additional resistors in a certain combination that is then placed in series with the original resistor, he achieves the desired resistance.
- The power dissipated in a resistor is given by P = V2/R, which means power decreases if resistance increases. Yet this power is also given by P = I2R, which means power increases if resistance increases. Explain why there is no contradiction here.Consider the circuit shown in the preceding problem. Write equations for the power supplied by the voltage sources and the power dissipated by the resistors in terms1. A circuit contains a 1000-Ω and a 300-Ω resistor connected in series with each other. The total circuit resistance must be reduced to a value of 1150-Ω. USing standard resistance values for 5% resistors discussed in Unit 5, explain how to change the present resistance value to the value desired.
- 2. The equivalent capacitance of two capacitors in series is 0.03 uF and when connected in parallel, 0.16 uF. If the capacitor with the smaller capacitance is replaced with a capacitor whose capacitance is double as much what will be the new equivalent series capacitance of the combination.The time constant in an RC circuit is the time it takes a. so that the current drops to zero. b. so that the current reaches its maximum value c. so that the capacitor is fully charged. d. in which the current decreases to 37% of its initial value.A student used the following circuit to "Verify the Ohm's Law". He drew a graph between Voltage and current he observed, what resistor value did he use in the circuit? Current 10 2 0.002 0.004 0.006 0.008 0.01 0.012 Current (Amps) O a. 1 KN O b.2500 N Oc. 100 Q O d.1 m. Voltage (Volts)13. Consider the graph below, which shows the voltage of a ca- pacitor discharging through different resistors. Δν RG RB Ry »t Rank from least to greatest the three resistors by their resistances. • A. Ry < RG < RB • B. RG < Ry < RB • C. RG < RB < Ry • D. RB < RG < Ry • E. RB < RySEE MORE QUESTIONSRecommended textbooks for youCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers with Modern …PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers with Modern …PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning