Which of the following is CORRECT regarding Ohms law

The correct answer is Option 2: V α I.

Key Points

• Ohm's Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points, provided the temperature and other physical conditions remain constant.
• The mathematical representation of Ohm's Law is: V α I, which can also be written as V = IR, where R is the resistance.
• This principle is fundamental in electrical circuits and helps in calculating voltage, current, or resistance in a circuit.
• The unit of resistance (R) is the ohm (Ω), named after the German physicist Georg Simon Ohm, who first formulated the law.
• Ohm's Law is not applicable to non-linear components like diodes or transistors, where the relationship between voltage and current is not linear.

Additional Information

• Voltage (V):
  • Voltage is the electrical potential difference between two points in a circuit.
  • It is measured in volts (V) and is the driving force for current flow in a conductor.
• Current (I):
  • Current is the rate at which electric charge flows through a conductor.
  • It is measured in amperes (A) and flows from higher to lower potential in the circuit.
• Resistance (R):
  • Resistance is the property of a material that opposes the flow of electric current.
  • It depends on the material, length, cross-sectional area, and temperature of the conductor.
• Limitations of Ohm's Law:
  • Ohm's Law is valid only for linear, ohmic materials where the current and voltage have a proportional relationship.
  • It does not apply to materials like semiconductors or devices like LEDs, diodes, and transistors.
• Applications of Ohm's Law:
  • Used in designing electrical circuits and determining required resistor values.
  • Helps in analyzing and troubleshooting electrical and electronic systems.