Electricity and Ohm's Law

What is Resistance?

• The flow of electrons

• Electric potential difference

• A battery

• The ability to reduce the flow of electrons

Voltage divided by Resistance

(V / R)

• Current

• Power

• Ohms

• Watts

Current times Resistance equals
 (I X R)

• Power

• Voltage

• Amperage

• Ohm

Voltage divided by Current

(V / I)

• Current

• Power

• Resistance

• Watts

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

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

Factor which does not affect the resistance

• Type of material

• Length of material

• Mass of the material

• Area of the material

What is this symbol?

• resistor

• switch

• battery

• bulb

If you decreases the resistance of a circuit, what happens?

• Current decreases

• Current increases

• Electrons disappear

• Bulbs get brighter

If you increase the voltage of a circuit, what happens?

• Current decreases

• Current increases

• Electrons disappear

• Bulbs get dimmer

What is a closed path for electrons to flow through?

• static electricity

• circuit

• amperes