Introduction to Circuits

The boltage that is marked on a brand new battery is

• always accurate

• very close to the actual voltage

• a little above the actual voltage

• a little below the actual voltage

The long lead on an LED must

• be connected to the negative (-) terminal of the battery

• be connected to the positive (+) terminal of the battery

• It doesn't matter it will work either way

For maximum voltage, a holder for two batteries must

• Connect the negative terminals together and the positive terminals together

• Connect the negative terminal of one battery to the positive terminal of the other battery

• Keep the terminals of the two batteries from touching each other

A switch is a

• Break in the circuit that can be open or closed

• Device that turns something on and off

• Device for connecting two circuits

Electricity is

• controlled by electronic devices

• the flow of energy through wires

• both answers are correct

• Neither answer is correct

In the "Water model for electricity"

What is the energy source?

In the air model for electricity, what represents the voltage?

Match the following description with measurement

• Power

• Slows the current

• Volt

• Electric potential

• Resistance

• Flow rate

• Current

• Amount of energy

V= I X R

Voltage = Current * Resistance

If the voltage is constant but you increase the resistance, what will happen to the current? Explain your reasoning using the air flow model for electricity