| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.06 |
| Score | 0% | 61% |
The joule is a unit of measurement for:
capacitance |
|
power |
|
energy |
|
resistance |
The joule is a unit of measurement for energy.
If an electrical circuit is interrupted, which of the following will result?
closed circuit |
|
parallel circuit |
|
open circuit |
|
short circuit |
A closed circuit is a complete loop or path that electricity follows. It consists of a source of voltage, a load, and connective conductors. If the circuit is interrupted, if a wire is disconnected or cut for example, it becomes an open circuit and no electricity will flow.
In an electronic circuit, a thermocouple can be used to:
keep the circuit at a designated safe temperature |
|
link the temperature of one component in the circuit to that of another component in the circuit |
|
increase or decrease the temperature of a component in the circuit |
|
open or close a circuit at a designated temperature |
A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.
In a series circuit, which of the following is the same across all branches of the circuit?
resistance |
|
voltage |
|
current |
|
conductance |
A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.
The rate of flow of electrons per unit time is which of the following?
resistance |
|
current |
|
conductance |
|
voltage |
Current is the rate of flow of electrons per unit time and is measured in amperes (A). A coulomb (C) is the quantity of electricity conveyed in one second by a current of one ampere.