Lesson 12: Resistance in a DC Parallel circuit

The reciprocal equation can be used to calculate the total ? of any parallel circuit.

resistance

The equivalent resistance of the paralleled branches of the circuit is ? .

10.5 Ω

This two branch parallel circuit has an equivalent resistance of ? .

12 Ω

For two resistors to be in parallel with each other in a circuit, there must be ? current path(s).

2

Find the total resistance of this five branch parallel circuit.

2.4 Ω

The total resistance in this circuit is ? .

2.5 Ω

The equivalent resistance of the three branches in this parallel circuit is ? .

20 Ω

The equivalent resistance of this six branch parallel circuit is ? .

3 Ω

The equivalent resistance in the branches in this circuit is ? .

3.75 Ω

The total equivalent resistance of this circuit is ? .

4.8 Ω

Calculate the total resistance of the circuit.

7.2 Ω

The equivalent resistance of the branches in this circuit is ? .

8 Ω

Closing the SW 3 switch will add the R3 resistor to the circuit. Paralleling this third resistor will ? the total circuit resistance and ? the total circuit current.

Decrease/increase

As resistors are added in parallel, the total circuit current will decrease. True or False

False

The general form of the equal value equation is ? .

Rt=Rx/Rn

The total resistance of a parallel circuit is always less than the resistance of the smallest resistor in the circuit. True or false

True

When all resistors are of equal value in a parallel circuit, the total resistance is equal to the value of one of the individual resistors or branches, divided by the number (N) of resistors or branches. True or False

True

In the circuit, the SW1 and SW2 switches are closed and the SW3 switch is in the open position. When the SW3 switch is closed, the total circuit resistance will be ? .

decreased by 1/3