3. Four resistors, R = parallel combination of R, and R, is connected in series with the parallel combination of R and R. The series-parallel combination is then connected across a 24 V DC power supply. A. Draw the schematic diagram and label the circuit elements. B. Calculate the equivalent resistance of the circuit. C. Find the total current of the circuit, the voltage across each resistor and the current through each resistor. 100 N, R2 = 250 0, R3 350 n and R4 200 n are connected such that the

3. Four resistors, R = parallel combination of R, and R, is connected in series with the parallel combination of R and R. The series-parallel combination is then connected across a 24 V DC power supply. A. Draw the schematic diagram and label the circuit elements. B. Calculate the equivalent resistance of the circuit. C. Find the total current of the circuit, the voltage across each resistor and the current through each resistor. 100 N, R2 = 250 0, R3 350 n and R4 200 n are connected such that the

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter18: Direct-Current Circuits

Section: Chapter Questions

Problem 42P

See similar textbooks

Similar questions

(a) Explain how the mnemonic ELI the ICE man can be used to recall whether current leads voltage or voltage leads current in RLC circuits. Note that E represents emf . (b) Explain how CIVIL works as another mnemonic device, where V represents voltage.
A person with body resistance between his hands of 10.0k accidentally grasps the terminals of a20.0-kV power supply. (Do NOT do this!) (a) Draw a circuit diagram to represent the situation, (b) If the internal resistance of the power supply is 2000 , what is thecurrent through his body? (c) What is the power dissipated in his body? (d) If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in this situation to be 1.00 mA or less? (e) Will this modification compromise the effectiveness of the power supply for driving low- resistance devices? Explain your reasoning.
Consider the circuit below, (a) What is the initial current through resistor R2? when the switch is closed? (b) What is die current through resistor R2 when the capacitor is fully charged, long after die switch is closed? (c) What happens if the switch is opened after it has been closed for some rime? (d) If the switch has been closed for a time period long enough for the capacitor to become fully charged, and then the switch is opened, how long before the current through resistor R1 reaches half of its initial value?
Consider the circuit shown below. (a) What is the terminal voltage of the battery? (b) What is the potential drop across resistor R2?
Consider the circuit shown below, (a) Find the voltage across each resistor. (b)What is the power supplied to the circuit and the power dissipated or consumed by the circuit?
A person with body resistance between his hands of 1.00 k accidentally grasps the terminals of a 20.0-kV power supply. (Do NOT do this!) (a) Draw a circuit diagram to represent the situation. (b) If the internal resistance of the power supply is 2000 , what is the current through his body? (c) What is the power dissipated in his body? (d) If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in this situation to be 1.00 mA or less? (e) Will this modification compromise the effectiveness of the power supply for driving low-re si stance devices? Explain your reasoning,
Consider the circuit below.(a) What is the RC time constant of the circuit? (b) What is the initial current in the circuit once the switch is closed? (c) How much time passes between the instant die switch is closed and the time the current has reached half of the initial current?
A young man owns a canister vacuum cleaner marked 535 W [at] 120 V and a Volkswagen Beetle, which he wishes to clean. He parks the car in his apartment parking lot and uses an inexpensive extension cord 15.0 m long to plug in the vacuum cleaner. You may assume the cleaner has constant resistance, (a) If the resistance of each of the two conductors in the extension cord is 0.900 , what is the actual power delivered to the cleaner? (b) If instead the power is to be at least 525 W, what must be the diameter of each of two identical copper conductors in the cord he buys? (c) Repeat part (b) assuming the power is to be at least 532 W.
In this chapter, most examples and problems involved direct current (DC). DC circuits have the current flowing in one direction, from positive to negative. When the current was changing, it was changed linearly from I=ImaxtoI=+Imax and the voltage changed linearly from V=Vmax to V=+Vmax where Vmax=ImaxR .Suppose a voltage source is placed in series with a resistor of R = 10 that supplied a current that alternated as a sine wave, for example, I(t)=(3.00A)sin(24.00st) . (a) What would a graph of the voltage drop across the resistor V(t) versus time look like? (b) What would a plot of V(t) versus I(t) for one period look like? (Hint: If you are not sure, try plotting V(t) versus I(t) using a spreadsheet.)
A 50resistor is connected across the emf v(t)=(160V)sin(120t) . Write an expression for the current throug1 the resistor.
A 1,00-?O voltmeter is placed in parallel with a 75.0kresistor in a circuit, (a) Draw a circuit diagram of the connection, (b) What is the resistance of the combination? If the voltage across the combination is kept the same as it was across the 75.0-kresistor alone, what is the percent increase in current? (d) If the current through the combination is kept the same as it was through the 75.0-kresistor alone, what is the percentage decrease in voltage? (e) Are the changes found in parts (c) and (d) significant? Discuss.
The emf devices in the circuits shown in Figure P29.28 are identical. a. Redraw circuit 1 in figure P29.28, including (and labeling) the current in each branch of the circuit. Apply the junction rule to write an equation in terms of the currents you have labeled. b. Repeat part (a) for circuit 2 in Figure P29.28. c. Simplify your equations if necessary, and compare your answers for each circuit. What can you say about the two circuits?