DC Theory Lvl. 4 Lesson 5: How Voltage and Current Dividers Work

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Solve for I1 in the circuit. (Round the FINAL answer to one decimal place.)

1.5A

Find the current through R1 in the circuit.

10A

Find the voltage across L3 using the Law of Proportionality.

120V

Determine the voltage applied to the parallel circuit.

24V

Find the current through R1 in the circuit.

25A

Use the Law of Proportionality to solve for the source voltage in the circuit.

56V

Find the voltage across R2 using the Law of Proportionality.

6V

Solve the Law of Proportionality for parallel circuits to find the total current when the current through one branch is known, and then find the total current for the circuit. (Round the FINAL answer to one decimal place.)

0.1A

Find the current through R1 in the circuit.

160A

Find the current through R2 in the circuit using the Law of Proportionality.

1A

Solve for the voltage across R3 in the circuit. (Round the FINAL answer to two decimal places.).

4.37V

Use the Law of Proportionality to solve for the voltage across R1 in the circuit. (Round the FINAL answer to one decimal place.)

4.8V

Find the voltage across R3 using the Law of Proportionality. (Round the FINAL answer to three decimal places.)

5.427V

Find the voltage across R2 in the circuit using the Law of Proportionality. (Round the FINAL answer to four decimal places.)

98.9474V

If Resistor B of a series circuit has three times more resistance than Resistor A, then the voltage across Resistor A will be ? the voltage across Resistor B.

A.

If a resistor in a parallel circuit has twice the resistance of a second resistor, it will have ? the current of the second resistor.

C

In a series circuit the ? is directly proportional to the resistance, while in a parallel circuit the ? is inversely proportional to the resistance.

C

What expression is used for finding the current through resistor R1 of a parallel circuit containing two resistors when the total circuit current and the resistance of the resistors are known?

D

Which of the following expresses the Law of Proportionality in equation form? (Assume only two resistors in the circuit.)

D.

In a parallel circuit, the current through any resistor is directly proportional to the value of that resistor.

False

In a series circuit, the voltage across any load is inversely proportional to the value of the resistance of that load.

False

It is necessary to know the current through a series circuit in order to calculate the voltage drops across resistors in the circuit using the Law of Proportionality.

False

It is necessary to know the voltage in a parallel circuit to figure current using the Law of Proportionality.

False

The sum of all of the voltage drops across the resistors in a series circuit is equal to the source voltage.

True


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