DC Theory Lesson 1

Superposition cannot be used to solve for circuit values using Ohm 's Law in circuits having more than one connected voltage source.

Select one:

True

False

When solving for values in circuits having more than one voltage source, all voltage

sources but one must be ? when calculating the Superposition Theorem.

a.connected

b.opened

c.shorted

d.tied to ground

Using the principle of superposition, proper calculation of currents from each ? can be

found for individual components to be used for determining final values.

a.parallel source

b.power source

c.resistor

d.series branch

Using superposition, the current must be found for each ? .

a.inductor

b.parallel resistor

c.power source

d.series resistor

The total current using the principle of superposition will be the algebraic sum of the

individual currents.

Select one:

True

False

Which of the following steps are involved in applying the principle of superposition?

a.Assume a direction of current flow through the load.

b.Calculate the current flow for the selected source.

c.Repeat this procedure for each power source in the circuit; determine the amount of

current and the direction of current flow through the load.

d.Select one power source and replace all the other power sources in the circuit with a

short circuit.

e.All of the above

Find the total current through R in the circuit using the principle of superposition.

Calculate to one decimal place.

The circuit represents the circuit and direction of current flow to solve for the effects of

voltage source E .

Select one:

True

False

Given the circuit and parameters shown, solve for the absolute value (input a positive number) and for personal reference be sure to note polarity of the following:

(Note: The calculated values and polarities from this question will be used to answer other questions. Assume polarity of current flow from source E to be positive.)

IR1 = ? mA

IR2 = ? mA

IR3 = ? mA

Given the circuit and parameters shown, solve for the absolute value (input a positive number) and for personal reference, be sure to note polarity of the following:

(Note: The calculated values and polarities from this question will be used to answer

other questions. Assume polarity of current flow from source E to be positive.)

IR1 = ? mA

IR2 = ? mA

IR3 = ? mA

Using the polarities and values computed in previous questions, and referring to the circuit shown, calculate the values and polarity of the following:

(Note: When recording final answers, make sure to input the negative sign when necessary and assume polarity of current flow from source E to be positive.)

IR1 = ? mA

ER1 = ? V

IR2 = ? mA

ER2 = ? V

IR3 = ? mA

ER3 = ? V

Given the circuit and parameters shown, solve for the absolute value (input a positive number) and for personal reference be sure to note polarity of the following:

(Note: The calculated values and polarities from this question will be used to answer other questions. Assume polarity of current flow from source E to be positive.)

IR1 = ? mA

IR2 = ? mA

IR3 = ? mA

Given the circuit and parameters shown, solve for the absolute value (input a positive

number) and for personal reference be sure to note polarity of the following:

(Note: The calculated values and polarities from this question will be used to answer other questions. Assume polarity of current flow from source E to be positive.)

IR1 = ? mA

IR2 = ? mA

IR3 = ? mA

Using the polarities and values computed in previous questions and referring to the

circuit shown, calculate the values and polarity of the following:

(Note: When recording final answers, make sure to input the negative sign when necessary and assume polarity of current flow from source E to be positive.)

IR1 = ? mA

IR2 = ? mA

IR3 = ? mA

Given the circuit and parameters shown, solve for the value of I with source E shorted.

(Note: The calculated value and polarity from this question will be used to answer other

questions.)

IR4 = ? mA

Given the circuit and parameters shown, solve for the value of I with source E shorted.

(Note: The calculated value and polarity from this question will be used to answer other questions.)

IR4 = ? mA

Given the previously calculated currents, find the resultant current for R . (Calculate to three decimal places.)

What is the voltage across R when all voltage sources are considered? Calculate to one decimal place.