| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
Which of the following is the same for each branch of a parallel circuit?
resistance |
|
current |
|
voltage |
|
power |
In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current (I) is the same at all points in the circuit, in a parallel circuit, voltage (V) is the same across each parallel branch of the circuit but current differs in each branch depending on the load (resistance) present.
Which of the following allows encapsulating complex circuit designs for easier integration into electronic devices and machines?
series-parallel circuits |
|
series circuits |
|
parallel circuits |
|
integrated circuits |
Circuits containing transistors are packaged into integrated circuit chips that allow encapsulating complex circuit designs (CPU, memory, I/O) for easier integration into electronic devices and machines.
You would measure the amount of voltage between two points in a circuit with a(n):
reostat |
|
voltmeter |
|
battery |
|
ammeter |
Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.
Which of the following statements about electrical resistance is true?
the more resistive the conductor is the slower electron flow will be |
|
the less resistive the conductor is the slower electron flow will be |
|
electrically conductive materials have no resistive properties |
|
the more resistive the conductor is the faster electron flow will be |
Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.
In an electrical circuit, resistors have fixed or __________ resistance.
series |
|
dynamic |
|
variable |
|
parallel |
Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance. Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.