Final answer:
Ohm's Law states that the voltage (V) across a resistor is equal to the product of the current (I) flowing through it and its resistance (R), expressed as V = IR. This fundamental physics principle is crucial in understanding electrical circuits.
Step-by-step explanation:
Understanding Ohm's Law
Ohm's Law is a fundamental principle in electronics and physics that describes the relationship between current, voltage, and resistance in an electrical circuit. According to Ohm's Law, the formula is given by V = IR, where V represents voltage in volts, I is the current in amperes, and R is the resistance in ohms. So, the correct formula for Ohm's Law based on the provided options is:
- a) Volts = current × resistance (V = IR)
In this relationship, the voltage across a resistor is equal to the product of the current flowing through it and its resistance. An ohmmeter is a practical tool that utilizes this law to measure resistance by applying a known voltage, measuring the current, and then calculating the resistance.
Applying Ohm's Law can also determine current (I = V/R) and resistance (R = V/I), but the fundamental expression of the law is V = IR, which can be used to derive the other forms.