What does an electrical circuit need to contain?

• voltage source

• load

• conductors

• a means to start and stop

• power

The amount of energy a device consumes is called ___.

• Power

• Device efficiency
• Electricity usage

Power is expressed in ____.

• Volts
• Watts
• Amps
• Ohms

What 4 things are related in such a way that if any one of them changes, they are all affected? (Mark those that apply)

• Volts

• Amperes

• Ohms

• Watts

• Source

What is the smallest part of any element?

• molecule
• atom
• organ
• cell

A proton (+) repels another ____.

• neutron
• electron
• photon
• proton

An electron (-) repels another ____.

• proton (+)
• photon (0)
• electron (-)
• neutron (0)

A proton (+) attracts an ____.

• electron
• neutron
• photon
• proton

What's the central part of the atom that is made up of protons & neutrons?

• electron
• neutron
• proton
• nucleus

The outer shell of an atom is called ​ (a)   and it contains ​ (b)  

• valence shell
• valence electrons
• proton
• flux lines