Electricity and Magnetism

In static electricity,charges

• flow continuously
• flow intermittently 
• build up in an atom
• build up on an object

What is current measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

What is resistance measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

How do you calculate voltage?

• Current X Resistance
• Resistance ÷ Current
• Current ÷ Resistance
• Measure it with a ruler

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm
• 3 Ohms
• 4 Ohms
• 12 Ohms

How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor

• 12 volts
• 24 volts
• 1.3333
• 48 volts

The space around a magnet where the force of a magnet can attract best is called__________

• magnetism
• bar magnet
• horseshoe magnet
• magnetic field

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

An atom loses an electron.  What type of charge does it have now?

• Positive
• Negative

An atom gains an electron.  What type of charge does it have now?

• Positive
• Negative
• No charge