Explain the relationship between voltage, current, and resistance in a closed circuit according to Ohm's Law.
1 Answer
Ohm's Law is a fundamental principle in electrical engineering and physics that describes the relationship between voltage (V), current (I), and resistance (R) in a closed electrical circuit. It was first formulated by the German physicist Georg Simon Ohm.
Ohm's Law can be mathematically represented as:
V = I * R
where:
V = Voltage (measured in volts, V)
I = Current (measured in amperes, A)
R = Resistance (measured in ohms, Ω)
According to Ohm's Law, in a closed circuit, the voltage across a conductor (e.g., a wire or a resistor) is directly proportional to the current flowing through it, with the proportionality constant being the resistance of the conductor.
In simpler terms, Ohm's Law states that:
The voltage (V) across a component is equal to the current (I) through the component multiplied by the resistance (R) of the component.
If you increase the voltage in a closed circuit, the current will increase proportionally, assuming the resistance remains constant.
If you increase the resistance in a closed circuit, given a constant voltage, the current will decrease proportionally.
If you decrease the resistance in a closed circuit, given a constant voltage, the current will increase proportionally.
It's important to note that Ohm's Law is valid for "ohmic" materials, which means materials that follow a linear relationship between voltage and current. For certain materials, such as semiconductors and diodes, the relationship between voltage and current is more complex and doesn't strictly adhere to Ohm's Law.
Ohm's Law can be mathematically represented as:
V = I * R
where:
V = Voltage (measured in volts, V)
I = Current (measured in amperes, A)
R = Resistance (measured in ohms, Ω)
According to Ohm's Law, in a closed circuit, the voltage across a conductor (e.g., a wire or a resistor) is directly proportional to the current flowing through it, with the proportionality constant being the resistance of the conductor.
In simpler terms, Ohm's Law states that:
The voltage (V) across a component is equal to the current (I) through the component multiplied by the resistance (R) of the component.
If you increase the voltage in a closed circuit, the current will increase proportionally, assuming the resistance remains constant.
If you increase the resistance in a closed circuit, given a constant voltage, the current will decrease proportionally.
If you decrease the resistance in a closed circuit, given a constant voltage, the current will increase proportionally.
It's important to note that Ohm's Law is valid for "ohmic" materials, which means materials that follow a linear relationship between voltage and current. For certain materials, such as semiconductors and diodes, the relationship between voltage and current is more complex and doesn't strictly adhere to Ohm's Law.