EE3 Basic Electrical Quantities L3 MS

What does EMF stand for?

• Energy motive force

• Electromotive force

• Electronics motive force

• Electricity motive force

Why are connecting wires usually made of copper?

• Because copper is an inexpensive metal

• Because copper does not break

• Because copper has a low resistance

• Because copper does not react with other chemicals

Which two properties are measured in the same units?

• EMF and potential difference

• Potential difference and current

• Resistance and current

• EMF and resistance

Which unit is used to measure electrical resistance?

• Ohm

• Ampere

• Watt

• Volt

What is the function of a resistor in an electrical circuit?

• To store electrical energy

• To decrease the voltage

• To increase the current

• To limit the current