Resistors in Parallel

What is a parallel circuit?

A circuit where components are connected on separate loops, allowing current to be shared.

What happens if one lamp connected in parallel breaks?

The other lamps will still light.

In parallel circuits, what is true about voltage?

The voltage is the same across each branch and equal to the supply voltage.

What is conserved at the junction in a parallel circuit?

Current is conserved; the total current flowing in equals the total current flowing out.

What is the sum of currents in each branch of a parallel circuit equal to?

The current in the supply.

What is the potential difference across resistors connected in parallel?

They have the same potential difference across them.

What happens to total resistance when more components are added in parallel?

Total resistance decreases in the circuit.

How is total resistance calculated for multiple resistors in parallel?

Using the equation 1/Rt = 1/R1 + 1/R2 + 1/R3 + ...

What does Kirchhoff's current law state about parallel circuits?

The total current entering a junction must equal the total current leaving the junction.

What do you need to consider when calculating resistance in parallel?

Always find the lowest common denominator for the resistors involved.