Collect data: Measure the current in the circuit using the resistor and voltage combinations given below.

Voltage
10
20
30
Resistance
20
20
30
Current:

To calculate the current in the circuit, we can use Ohm's Law, which states:

I = V / R

Where:
I = current in the circuit (in Amperes)
V = voltage across the resistor (in Volts)
R = resistance of the resistor (in Ohms)

For the given voltage and resistance combinations:
1. When V = 10V and R = 20Ω:
I = 10 / 20 = 0.5 A

2. When V = 20V and R = 20Ω:
I = 20 / 20 = 1 A

3. When V = 30V and R = 30Ω:
I = 30 / 30 = 1 A

Therefore, the current in the circuit for the given resistor and voltage combinations is:
0.5 A, 1 A, 1 A