Electronics Quiz 1

True or false:

a “short circuit means there is no path for current to flow and no current flowing in the current.

False

If a voltage increases and the resistance remains constant, the current will…

Increase

Decrease

Stay the same

Increase

If resistance increases and voltage remains constant, the current will…

Increase

Decrease

Stay the same

Decrease

True or false?

In a parallel circuit, the total resistance of the circuit is always lower than the smallest branch resistance in the circuit.

True

The total resistance (AC impedance) of two 8 ohm speakers wired in parallel with each other would be

4 ohms

An electrical component that can limit current to a safe value, drop voltages to a required value is

a resistor

Voltage is equivalent to which of the following?

current

pressure

resistance

pressure

True or false

In a parallel circuit, the total current is the sum of the individual branch currents.

True

The formulas stating the mathematical relationship between voltage, current, and resistance are known as

Ohm’s law

In a series circuit:

• voltage will drop across each resistor

• you add up the resistor values in the circuit to determine the total resistance

• the amount of current flowing would be the same through all resistors

• all of the above

All of the above are true

What happens to the total resistance in a parallel circuit when you add another branch to that circuit

• Stays the same

• decreases

• increases

Decreases

AC and DC have a constant, non-changing polarity

True or false

false

In a series circuit:

• there are two or more loads with more than one path for current to flow

• there is no load with more than one path for current to flow

• there is one path for current to flow

There is one path for current to flow

The unit of measurement used for current is

amps