Ohm’s law relates the resistance of a component to its voltage and current. Applying circuit rules for current and voltage with Ohm’s Law allows us to formulate rules to determine total resistance.

As the voltage across a resistor is increased, what happens to the resistance of the resistor?

It decreases

It remains constant

It increases

What is the current in this circuit?

What is the resistance of the resistor in this circuit?

If the resistance in this circuit is halved, what will the current be?

The diagram shows part of a circuit. What is the resistance of the resistor shown?

The diagram shows part of a circuit. What is the reading shown on the ammeter?

The diagram shows part of a circuit. What is the reading displayed on the voltmeter?

What kind of a circuit is this?

Series

Parallel

Neither

What is the total resistance of this circuit?

If the supply voltage is , what is the current in this circuit?

If the current in each branch is , what is the supply voltage in this circuit?

What is the resistance between and ?