I, V & R in Series/Parallel

The current through each bulb in a series circuit...

• adds up to the total current

• is the same as the total current

The voltage across each bulb in a series circuit...

• is the same as the supply voltage

• adds up to the supply voltage

The current through each branch of a parallel circuit...

• is the same as the total current

• adds up to the total current

The voltage each branch of a parallel circuit...

• is the same as the supply voltage

• adds up to the supply voltage

Which equation would you use to calculate total resistance in a series circuit?

• Rtotal = R1 + R2 + ...

• Rtotal = R1 x R2 x ...

• 1/Rtotal = 1/R1 + 1/R2 + ...

Which equation would you use to calculate total resistance in a parallel circuit?

• Rtotal = R1 + R2 + ...

• Rtotal = R1 x R2 x ...

• 1/Rtotal = 1/R1 + 1/R2 + ...

In the circuit pictured, how much current flows through Bulb 1?

• 1.5A

• 3A

• 6A

• we aren't given enough information to work this out

In the circuit pictured, how much current flows through Bulb 2?

• 1.5A

• 3A

• 6A

• we aren't given enough information to work this out

In the circuit pictured, what is the voltage across Bulb 2?

• 3.5V

• 4V

• 8V

• we aren't given enough information to work this out

In the circuit pictured, how much current is flowing through Bulb 1?

• 1A

• 2A

• 3A

• we aren't given enough information to work this out