| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.57 |
| Score | 0% | 71% |
Which of the following allows encapsulating complex circuit designs for easier integration into electronic devices and machines?
series circuits |
|
series-parallel circuits |
|
integrated circuits |
|
parallel 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.
The ohm is a unit of measurement for:
capacitance |
|
energy |
|
resistance |
|
power |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.
| 7.7 A | |
| 7 A | |
| 4 A | |
| 14 A |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
Solved for current, I = \( \frac{V}{R} \) = \( \frac{140}{20} \) = 7 A
From what energy do photovoltaic cells produce electrical energy?
chemical |
|
magnetic |
|
sun |
|
nuclear |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.
Which of the following is not a terminal on a transistor?
emitter |
|
collector |
|
base |
|
input |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.