Yr.10. Unit 2. Ohms Law

Ohms Law

​The law stating that electrical Current is proportional to Voltage and inversly proportional to Reistance

• Current: The flow of electricity through the electronic circuit
• Measured in: Amps (noted as I)

• Voltage: The quantity of electrical energy stored
• Measured in: Measured in Voltage (noted as V)

• Resistance: is a force that counteracts the flow of current.
• Measured in: Measured in Ohms (noted as Ω)

Multiple Choice

If the current through a resistor is 0.8A & the voltage is 20V- What is the resistance?

• 33 ohms

• 25 ohms

• 10 ohms

• 16 ohms

Multiple Choice

A Coil has a current of 0.5A flowing through it when the voltage is 12V. WHat is the resistance of the coil

• 30 ohms

• 0.041 ohms

• 24 ohms

• 82 ohms

Multiple Choice

What size resistor would produce a 3A current flow in a 12V battery?

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

Multiple Choice

What is current?

• The force that counteracts the flow of current

• The electrical energy stored

• The ability to do work

• The flow of electrcity through an electronic circuit

Multiple Choice

What is Resistance?

• The force that counteracts the flow of current

• The electrical energy stored

• The ability to do work

• The flow of electrcity through an electronic circuit