What is the voltage drop across a resistor in a circuit?
1 Answer
The voltage drop across a resistor in a circuit is the amount of voltage that is lost or "dropped" as current flows through the resistor. In other words, it is the difference in electric potential (voltage) between the two ends of the resistor. This voltage drop occurs due to the resistance offered by the resistor to the flow of electric current.
According to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is given by the formula:
V = I * R
Where:
V is the voltage drop across the resistor (in volts),
I is the current flowing through the resistor (in amperes or amps), and
R is the resistance of the resistor (in ohms).
So, when current flows through a resistor, the voltage drop across it is directly proportional to the current and the resistance. The higher the current or the resistance, the larger the voltage drop will be. This principle is fundamental in understanding and analyzing electrical circuits.
According to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is given by the formula:
V = I * R
Where:
V is the voltage drop across the resistor (in volts),
I is the current flowing through the resistor (in amperes or amps), and
R is the resistance of the resistor (in ohms).
So, when current flows through a resistor, the voltage drop across it is directly proportional to the current and the resistance. The higher the current or the resistance, the larger the voltage drop will be. This principle is fundamental in understanding and analyzing electrical circuits.