Calculating Resistance

How do you calculate resistance?

• Current x Voltage

• Voltage x Power

• Voltage ÷ Current

• Current ÷ Voltage

What happens to resistance when the length of the wire increases?

• Stays the same

• Increases

• Decreases

Who is this?

• Captain America

• Thor

• Deadpool

• Antman

Why should you switch off the power between taking readings?

• The wire will break

• The power will run out

• The wire will get hot

• To stop wasting energy

What effect does a hotter temperature have on resistance?

• No effect

• Increases resistance

• Decreases resistance

• Stays the same

A spark of static electricity can measure up to...

• 3 volts

• 30 volts

• 300 volts

• 3000 volts

Tags

NGSS.MS-PS2-3

What other factor of a wire could affect its resistance?

• Material its made of

• How shiny it is

• Colour

What platform do witches and wizards have to take to get to Hogwarts?

• Platform 9 and 3/4

• Platform 9

• Platform 6 and 1/2

• Platform 3 and 2/4

How do you calculate current from voltage and resistance?

• Current = voltage x resistance

• Current = resistance x power

• Current = voltage ÷ resistance

• Current = resistance ÷ voltage

What is the resistance if the current is 2A and the voltage is 10V?

• 8 Ω

• 20 Ω

• 12 Ω

• 5 Ω