Ohmic and Non-Ohmic Conductors

The flow of electrons in a circuit is called

• current
• flow
• circuit
• potential difference

____________ allows current to flow.

• A conductor
• An insulator
• A magnet
• An electron

The difference in electrical potential energy between two places is called

• resistance
• friction
• induction
• voltage

difference between ohmic and non-ohmic conductors is 

• ohmic conductor have constant resistance when the voltage is varied across them and non ohmic have changing resistance 
• resistance differs but temparature remain the same 
• no difference
• not enough information provided 

What is resistance measured in?

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

A non-ohmic conductor has a resistance that

• stays the same

• changes

LEDs do/do not obey Ohm's law and so are called ______

• do; Ohmic conductors

• do; non-Ohmic conductors

• do not; Ohmic conductors

• do not; non-Ohmic conductors

Which of these describe a current-voltage graph for a lamp (non-ohmic)

• Straight line through the origin

• straight line not through the origin

• A gradient that changes

• a flat line

Which of these describe an Current-voltage graph for an Ohmic conductor

• Straight line passes through origin

• Curved line passes through origin

• A gradient that changes

Which of these devices are ohmic.

• Lamp

• Resistor