IV characteristics

IV characteristics

Multiple Choice

What are the units for voltage?

• Volts

• Amps

• Ohms

• Watts

Multiple Select

Which is the correct equation that links voltage, current and resistance?

• I = R/ V

• V= I x R

• R= V x I

• V= R/ I

Multiple Choice

True or false

Resistance is always unwanted and detrimental to a circuit?

• True

• False

Open Ended

What is the relationship between current and voltage in a fixed resistor at a constant temperature?

Open Ended

What is the relationship between current and voltage in a filament bulb? Why is this different to fixed reisitor?

Open Ended

What is the relationship between current and voltage in a diode

Open Ended

Can you name any uses of resistors?

Multiple Choice

As the light intensity increases, what happens to the light?

• It gets brighter

• It gets darker

Multiple Choice

Low light intensity means a ...................... resistance. Choose the right word to complete the sentance

• low

• high

Multiple Select

Which of these uses are correct for an Light emitting diode (LDR)?

• Automatic flash on a camera

• Turning on lights automatically

• checking the temperature in a room

• Making a circuit safe

• Turning an oven off when it is hot enough

Multiple Choice

A high temperature means a ...................... resistance. Choose the right word to complete the sentance

• low

• high

Multiple Select

Which of these uses are correct for a thermistor?

• Automatic flash on a camera

• Turning on lights automatically

• checking the temperature in a room

• Making a circuit safe

• Turning an oven off when it is hot enough