Final answer:
Using Ohm’s law (I = V / R), the experimental currents for the given voltages and resistance are 0.25 A for 5 V, 1 A for 20 V, and 2.5 A for 50 V with a fixed resistance of 20 Ω.
Step-by-step explanation:
Ohm’s law expresses the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. According to Ohm’s law, the formula to calculate the current is I = V / R. We can use this formula to determine the experimental current for each set of values in Table A.
- For voltage = 5 V, resistance = 20 Ω: I = 5 V / 20 Ω = 0.25 A
- For voltage = 20 V, resistance = 20 Ω: I = 20 V / 20 Ω = 1 A
- For voltage = 50 V, resistance = 20 Ω: I = 50 V / 20 Ω = 2.5 A
The experimental current flowing through a circuit can be determined using the given resistance and applied voltage following Ohm's law. For example, with a fixed resistance of 20 Ω, as voltage increases, the current increases proportionally. This demonstrates the cause-and-effect relationship inherent in Ohm's law, with voltage being the causal factor and the current being the resultant effect.