1. What Is A Voltage Divider?

A voltage divider is a simple circuit that produces an output voltage that is a fraction of its input voltage. It consists of two resistors connected in series, with the output voltage taken from the connection between them.

2. How Does The Current Calculator Work?

The calculator uses Ohm's Law to determine the current:

Where:

• \( I \) — Current through the divider (Amperes)
• \( V_{in} \) — Input voltage (Volts)
• \( R_1 \) — First resistor value (Ohms)
• \( R_2 \) — Second resistor value (Ohms)

Explanation: The current through both resistors is the same in a series circuit, and is calculated using the total resistance and input voltage.

3. Importance Of Current Calculation

Details: Calculating current is essential for proper circuit design, ensuring components operate within their rated specifications, and preventing damage from excessive current.

4. Using The Calculator

Tips: Enter input voltage in volts, and both resistor values in ohms. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is the current the same through both resistors?
A: In a series circuit, current is constant throughout the circuit path according to Kirchhoff's Current Law.

Q2: What happens if one resistor is much larger than the other?
A: The current will be primarily limited by the larger resistor, resulting in lower current flow through the circuit.

Q3: How does this relate to power dissipation?
A: Power dissipation in each resistor can be calculated using P = I²R, where I is the current through that resistor.

Q4: Can this calculator be used for AC circuits?
A: For AC circuits with purely resistive elements, the calculation is the same. For reactive components, impedance must be considered.

Q5: What are typical applications of voltage dividers?
A: Voltage dividers are commonly used in level shifting, sensor interfacing, biasing transistors, and creating reference voltages.