Exam 41: Series, Parallel, and Series-Parallel Circuits

Two light bulbs are wired in series and one bulb burns out (opens.) Technician A says that the other bulb will still work. Technician B says that the current will increase in the circuit because one electrical load (resistance) is no longer operating. Which technician is correct?

In a series circuit ________.

The current flowing into each junction of a parallel circuit ________ the current flow at the junction on the opposite end of that branch.

Two bulbs are connected in parallel to a 12-volt battery. One bulb has a resistance of 6 ohms and the other bulb has a resistance of 2 ohms. Technician A says that only the 2-ohm bulb will light because all of the current will flow through the path with the least resistance and no current will flow through the 6-ohm bulb. Technician B says that the 6-ohm bulb will be dimmer than the 2-ohm bulb. Which technician is correct?

Which one of the bulbs in this circuit will drop (use up) the most voltage?

As additional branches are added to a parallel circuit, total circuit resistance ________.

Knowledge of parallel circuit fundamentals is necessary to diagnose ________.

The total circuit resistance of a parallel circuit is always ________ the lowest resistance present in any branch of the circuit.

Technician A says that Ohm's law can be used to determine circuit current flow if total circuit resistance and total voltage are known. Technician B says that Ohm's law can be used to calculate the unknown resistance of a load in a circuit if total current and source voltage are known. Which technician is correct?

If one branch of a parallel circuit loses continuity, the other branches will still each receive source voltage and ground.

More electrical current will tend to flow through the branch of a parallel circuit with ________ resistance.

What type of circuit is this?

If resistance is reduced in a series circuit, ________ current will flow.

Technician A says that electronic calculators have a memory function that can be used to calculate resistance, current, and voltage values for a parallel circuit. Technician B says to separate components of a Series-parallel circuit to simplify calculations. Which technician is correct?

What is the total resistance of this circuit?

What is the total resistance in this circuit?

In a parallel circuit ________.

The sum of currents in each branch of a parallel circuit will ________ total circuit current.

Calculate the current flow in this circuit. (Round off to 2 decimal points.)

Kirchhoff's law states that the voltage around a closed circuit is equal to the sum of ________ across all the loads.