Experiment: Create a series circuit with a 20-volt battery and four 20-ohm resistors, as shown. Measure the current.
Based on the voltage and current, what is the resistance of the circuit?
(Hint: Use Ohm’s law.)
Ohm's Law states that V = IR, where V is voltage, I is current, and R is resistance.
In this case, the voltage of the battery is 20 volts and the current is measured at 1 amp. Therefore, using Ohm's Law, we can calculate the resistance of the circuit:
R = V/I
R = 20 volts / 1 amp
R = 20 ohms
Therefore, the resistance of the circuit is 20 ohms.