Use Ohm's Law to calculate the current in parallel circuits.

See how Ohm's Law can tell us that the voltage across resistors will depend on that current value I and each R-value.

In the everyday electrical devices we use - calculators, remote controls and cell phones - a voltage source such as a battery is required to close the circuit and operate the device. In this hands-on activity, students use a battery,...

Use the formula for the parallel resistors to calculate the total resistance in series-parallel circuits.