Physics Physics Practice Problems Solutions Library

# Kirchhoff's Loop Rule Solutions Library

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39 solutions

Kirchhoff's Loop Rule

#### Q. Consider the circuit in the diagram, with the sources of emf listed below.ε1 = 26 Vε2 = 47 Vε3 = 9.5 Vε4 = 26 VPart A. Find the I1 in amps.Part B. ...

Solved • May 19, 2020

Kirchhoff's Loop Rule

#### Q. Part A. Find the potential of point a with respect to point b in the figure. Express your answer using two significant figures.Part B. If points a ...

Solved • May 19, 2020

Kirchhoff's Loop Rule

#### Q. What is the magnitude of the current in the 30 Ω resistor in the figure (Figure 1)?

Solved • May 11, 2020

Kirchhoff's Loop Rule

#### Q. Calculate the currents in the below resistors of the figure.Part CCalculate the current in 64 ohm resistor.Express your answer to two significant f...

Solved • May 4, 2020

Kirchhoff's Loop Rule

#### Q. Part A. What is the magnitude of the current in the 30-Ω resistor in the figure? Answer in AmperesPart B. What is the direction of the current?

Solved • Apr 28, 2020

Kirchhoff's Loop Rule

#### Q. Calculate the currents in the below resistors of the figure.Part ACalculate the current in 25 ohmresistor.Express your answer to two significant fi...

Solved • Apr 28, 2020

Kirchhoff's Loop Rule

#### Q. Find the unknown emfs ε1 and ε2. The current through the 3.00-Ω resistor is 8.00 A.

Solved • Apr 24, 2020

Kirchhoff's Loop Rule

#### Q. Find the resistance R. (Note that three currents are given.)

Solved • Apr 24, 2020

Kirchhoff's Loop Rule

#### Q. 1) Unlike the idealized voltmeter, a real voltmeter has a resistance that is not infinitely large.A voltmeter with resistance Rv is connected acros...

Solved • Apr 23, 2020

Kirchhoff's Loop Rule

#### Q. The circuit diagram below shows two emf sources and a bulb connected in parallel. Also connected in the circuit is a resistor with resistance R = 0...

Solved • Apr 8, 2020

Kirchhoff's Loop Rule

#### Q. a. What is the magnitude of the current in the 18 Ω resistor in the figure? b. What is the direction of the current—to the left or to the right?

Solved • Apr 8, 2020

Kirchhoff's Loop Rule

#### Q. In the circuit shown in the figure (Figure 1) find(a) the current in resistor R(b) the resistance R(c) The unknown emf ℰ(d) If the circuit is broke...

Solved • Apr 8, 2020

Kirchhoff's Loop Rule

#### Q. What is the current through the 10 Ω resistor in the figure?  Express your answer to two significant figures and include the appropriate units. Is ...

Solved • Mar 18, 2020

Kirchhoff's Loop Rule

#### Q. (a) Find the emf ε1 in the circuit of the figure (Figure 1) .(b) Find the emf ε2 in the circuit of the figure.(c) Find the potential difference of ...

Solved • Mar 11, 2020

Kirchhoff's Loop Rule

#### Q. In the following figure, what is the value of the potential at points a and b? (Figure 1) Express your answer using two significant figures separat...

Solved • Mar 11, 2020

Kirchhoff's Loop Rule

#### Q. A. In the circuit shown in the figure, find the magnitude of current in the upper branch.B. Find the magnitude of current in the middle branch.C. F...

Solved • Mar 11, 2020

Kirchhoff's Loop Rule

#### Q. The ammeter in the figure reads 3.0 A.a) Find I2. Express your answer using two significant figures, in Amps.b) Find ε. Express your answer using t...

Solved • Mar 11, 2020

Kirchhoff's Loop Rule

#### Q. For the following circuit, you ultimately want to measure the power dissipation of the 2.0 Ω resistor:a) First, redraw the diagram on the page you ...

Solved • Mar 11, 2020

Kirchhoff's Loop Rule

#### Q. What are the magnitude and direction of the current in the 20 Ω resistor in (Figure 1)?

Solved • Mar 10, 2020

Kirchhoff's Loop Rule

#### Q. The following equation is true for the right loop if the circuit. E2 – I3R3 – I2R2 – E1 = 0 –E2 – I3R3 – I2R2 – E1 = 0 E2 – I3R3 – I2R2 + E1 =...

Solved • Jun 18, 2017

Kirchhoff's Loop Rule

#### Q. The following equation is true for the right loop of the circuit. a) E2 - I3R3 - I2R2 - E1 = 0 b) -E2 - I3R3 - I2R2 - E1 = 0 c) E2 - I3R3 - I2R2...

Solved • May 30, 2017

Kirchhoff's Loop Rule

#### Q. The two light bulbs in the circuit on the right are identical. When the switch is closed, A) they both go out B) the intensities of both A and B ...

Solved • May 24, 2017

Kirchhoff's Loop Rule

#### Q. The circuit shown in the figure has resistors R1 = 10 Ω, R2 = 20 Ω, R3 = 30 Ω, ε1 = 10 V, ε2 = 20 V. What is the current through resistor R1? (1) ...

Solved • May 1, 2017

Kirchhoff's Loop Rule

#### Q. Present one junction and two loop rule equations that you could solve simultaneously to obtain values for the three currents, I1, I2 and I3, in the...

Solved • Apr 28, 2017

Kirchhoff's Loop Rule

#### Q. For the circuit below, determine all the currents. Assume ε1 = 10 V, ε2 = 15 V, R 1 = R 3 = 40 Ω, R 2 = 60 Ω, R 4 = 100 Ω.

Solved • Apr 27, 2017

Kirchhoff's Loop Rule

#### Q. What current will a 3.0 V battery cause to flow if it is short circuited? The internal resistance of the battery is 14.0 Ω. A) 42 A B) 130 A C) ...

Solved • Apr 18, 2017

Kirchhoff's Loop Rule

#### Q. A 10 Ω lightblub is connected to a variable voltage source. The way to vary the voltage of the source is not by altering the source itself, but rat...

Solved • Mar 1, 2017

Kirchhoff's Loop Rule

#### Q. Your car will not start. You open the hood and measure the voltage on the battery as 14 volts. You then have a friend try to start the car while yo...

Solved • Feb 28, 2017

Kirchhoff's Loop Rule

#### Q. In the following circuit,V= 25 V, R 1 = 5 Ω, R2 = 15 Ω, R3 = 25 Ω, R4 = 10 Ω, and R5 = 20 Ω. Find each current in the circuit.

Solved • Feb 23, 2017

Kirchhoff's Loop Rule

#### Q. In the following circuit, the resistances are R 1 = 5 Ω, R2 = 10 Ω, R3 = 10 Ω, R4 = 25 Ω, and R5 = 15 Ω. If the current through R3 is 1 A to the ri...

Solved • Feb 23, 2017

Kirchhoff's Loop Rule

#### Q. In the following figure, the configuration of resistors is known as a Wheatstone Bridge, which is used to measure the resistance of an unknown resi...

Solved • Feb 23, 2017

Kirchhoff's Loop Rule

#### Q. Consider the circuit shown in the sketch. The current in the 8.0 Ω resistor is   I1 = 3.0 A. What is the current through 4.0 Ω resistor?

Solved • Jan 27, 2017

Kirchhoff's Loop Rule

#### Q. Consider the circuit shown in the sketch. The current in the 8.0 Ω resistor is 2.0 A, in the direction shown. What is the resistance of the resist...

Solved • Jan 27, 2017

Kirchhoff's Loop Rule

#### Q. Consider the circuit shown in the sketch. The current in the 8.0 Ω resistor is 2.0 A, in the direction shown. What is I1, the current through the ...

Solved • Jan 27, 2017

Kirchhoff's Loop Rule

#### Q. The circuit shown in the sketch consists of a battery with emf ε and internal resistance r connected to two resistors as shown. R1 = 3.0 Ω, R2 = 6....

Solved • Jan 25, 2017

Kirchhoff's Loop Rule

#### Q. The circuit shown in the sketch consists of a battery with emf ε and internal resistance r connected to two resistors as shown. R1 = 3.0 Ω, R2 = 6....

Solved • Jan 25, 2017

Kirchhoff's Loop Rule

#### Q. Consider the circuit shown in the sketch. What is the current through the 10.0 V battery?

Solved • Jan 23, 2017

Kirchhoff's Loop Rule

#### Q. Consider the circuit shown in the sketch. What is the current through the 3.0 Ω resistor?

Solved • Jan 23, 2017

Kirchhoff's Loop Rule

#### Q. In Figure 3, consider the circuit sketched. The two batteries have negligible internal resistance and emf's  ε1 = 28.0 V and ε2 = 42.0 V. The three...

Solved • Jan 5, 2017