A student experiments with a simple circuit by testing it with a 1.2 - volt battery. Next, the student tests the same circuit with a 3.6-volt battery instead. The student records the voltage, resistance, and current of both trials in a table.Trial Number Voltage (volts) Resistance (ohms) Current (amperes)Trial 1 1.2 800 0.0015Trial 2 3.6 800 0.0045Based on the experiment, which claim can the student make about the relationship between voltage, resistance, and current?A When voltage is increased, the current will decrease if the resistance remains constant.B When voltage is increased, the current will increase if the resistance remains constant.C When resistance is increased, the voltage and current will also increase.D When resistance is increased, the voltage and current will both decrease.
Question
A student experiments with a simple circuit by testing it with a 1.2 - volt battery. Next, the student tests the same circuit with a 3.6-volt battery instead. The student records the voltage, resistance, and current of both trials in a table.Trial Number Voltage (volts) Resistance (ohms) Current (amperes)Trial 1 1.2 800 0.0015Trial 2 3.6 800 0.0045Based on the experiment, which claim can the student make about the relationship between voltage, resistance, and current?A When voltage is increased, the current will decrease if the resistance remains constant.B When voltage is increased, the current will increase if the resistance remains constant.C When resistance is increased, the voltage and current will also increase.D When resistance is increased, the voltage and current will both decrease.
Solution
Based on the experiment, the student can make the claim that "When voltage is increased, the current will increase if the resistance remains constant." This is option B. This is because in both trials, the resistance remained constant at 800 ohms, but when the voltage increased from 1.2 volts to 3.6 volts, the current also increased from 0.0015 amperes to 0.0045 amperes. This is in line with Ohm's Law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points when the temperature remains constant.
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