Basic Electricity

Which device is used to control the flow of current in a circuit?

• Resistor

• Capacitor

• Switch

• Battery

Which of the following materials is considered a conductor?

• Rubber

• Glass

• Plastic

• Copper

What is a characteristic of insulators?

• They are highly conductive

• They have tightly bound electrons

• They require high voltage to operate

• They allow free movement of electrons

What are thermocouples primarily used for?

• Voltage regulation

• Data storage

• Current generation

• Heat sensing

According to Coulomb's Law, what happens to like charges?

• They repel each other

• They attract each other

• They become neutral

• They neutralize

Photovoltaic cells make electricity using what source of energy?

• Sound waves

• Mechanical force

• Wind energy

• Sunlight

What does the term 'resistance' refer to in an electrical context?

• Generation of voltage

• Flow of electrons

• Opposition to the flow of current

• Strength of magnetic fields

What does a multi-meter measure?

• Only voltage

• Resistance only

• Voltage, current, and resistance

• Current and power

What creates voltage in a generator or dynamo?

• Static magnetic field

• Thermal energy

• Chemical reactions

• Rotational motion through a magnetic flux

Which type of battery can be recharged multiple times?

• Lead cell

• Secondary cell

• Primary cell

• Dry cell