Electrical Components and Current Quiz

Rubber is commonly used as an insulator due to its high resistivity to electric current.

Amperes is the SI unit of electric current.

AC stands for Alternating Current in electrical engineering.

A transformer is commonly used to change the voltage level in a circuit.

A diode is used to convert AC to DC.

A potentiometer is used to vary resistance in an electrical circuit.

A switch is primarily used to control the flow of current in a circuit.

A capacitor is used to store electrical charge in a circuit.

Transistor amplifies or switches electronic signals in an electrical circuit.

Adding more resistors in series increases the total resistance.

The main function of a fuse in an electrical circuit is to limit current.

Kirchhoff's Voltage Law states that the voltage across a closed loop is equal to the sum of the voltages across each component in the loop.

Silicon is typically used as a semiconductor in electronics.

A transistor is not a passive electrical component.

A flyback diode is used to protect against voltage spikes in a circuit.

Ohm is the unit of electrical resistance.

The resistance of a conductor increases as its temperature increases.

Kirchhoff's Current Law states that the total current entering a junction in a circuit is equal to the total current leaving the junction.

Iron is typically used as a core in an electromagnet.