Introduction to Ohm's Law

What is the unit for resistance?

• meters (m)

• amps (A)

• Coulomb's (C)

• Ohms (Ω)

What size resistor would produce a 3 amp current flow with a 12 volt battery?

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

What is current measured in?

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

What is resistance?

• The flow of electrons

• Electric potential difference

• A battery

• The ability to reduce the flow of electrons

The mathematical relationship among voltage, current, and resistance is called...

• Faraday's Law

• Tesla's Law

• Edison's Law

• Ohm's Law

Current times resistance equals

(I*R)

• Power

• Voltage

• Amperage

• Ohm

Voltage divided by resistance

(V/R) is...

• Current

• Power

• Ohms

• Watts

This circuit has a 24 volt battery and the resistor is 8 Ω. How many amps are running through the circuit?

• 3 Amps

• 192 Amps

• 2 Amps

• 4 Amps

How many volts would we need to produce a current flow of 8 amps through a 6 Ω resistor?

• 12 volts

• 24 volts

• 1.3333

• 48 volts

How many volts would it take to push 1 amp through a resistance of 1 Ω?

• 10V

• 1V

• 48V

• 5V