Electric Circuits

The following image respresents a

• LED

• Series circuit

• Parallel circuit

• Resistor

The following image respresents a

• LED

• Series circuit

• Parallel circuit

• Resistor

In a series circuit, the current...

• is different for each resistor

• is equal to zero

• is the same for each resistor

• is equal to the power

In a parallel circuit, the voltage...

• is different for each resistor

• is the same for each resistor

• is equal to the sum of each voltage

• is equal to zero

The formula to find the equivalent resistance in a series circuit is...

• 
• 

The formula to find the equivalent resistance in a parallel circuit is...

• 
• 

The equivalent resistance of the following circuit is(R1= 20 Ω, R2=50 Ω)...

• 70 Ω

• 30 Ω

• 14.28 Ω

• 23.4 Ω

The equivalent resistance of the following circuit is...

• 9.23 Ω

• 90 Ω

• 60 Ω

• 70 Ω

Which resistor has the greatest voltage across it? If these were light bulbs, which would be the brightest?

• R₂, R₂

• R₁, R₁

• R₂, R₃

• R₃, R₂

What is the equivalent resistance in this branch of a circuit?

• 45Ω

• 256Ω

• 8Ω

• 73Ω