I V Characteristics

Which component will give the following graph?

• thermistor

• fixed resistor

• variable resistor

• diode

Which component will give the following graph?

• LDR

• wire

• cell

• diode

What is true for an LDR

• As light level increases the resistance decreases

• As light level increases the resistance increases

• As temperature increases the resistance decreases

• As temperature increases the resistance increases

Which graph is true for a thermistor?

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Use the graph to find the current when the PD is 10V

• 1.0 A

• 2.5 A

• 3.0 A

• 3.5A

What relationship is shown by this graph ( choose two true statements)

• A linear relationship

• A directly proprtional relationship

• A non-linear relationship

• An inverse relationship

Which statement is true for a filament bulb?

• When the filament gets hot the resistance goes up

• When the filament gets hot the resistamce goes down

When a filament bulb gets hot it's resistance goes up. Why is this?

• This is because the atoms vibrate more

• This is because the atoms vibrate less

What is the name given to a diode with no current flow through it?

• Forward bias

• Reverse bias

Which images shows an LED?

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