Ohm’s Law Calculator

Ohm’s Law Calculator

Ohm’s Law

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 and inversely proportional to the resistance (R) of the conductor. Mathematically, it is expressed as:

V = I x R
where,
V is the voltage (in volts, V)
I is the current (in amperes, A)
R is the resistance (in ohms, Ω)

About Ohm’s Law Calculator

Ohm’s Law Calculator is designed to help determine the relationships between voltage, current, resistance, and power in an electrical circuit. By inputting any two of these parameters, the calculator will compute the remaining values and display the results along with the formulas used.

Usage Instructions

– Enter Values: Input values for any two of the following fields: Voltage (V), Current (I), Resistance (R), or Power (P). Leave the other fields blank.
– Click “Calculate”: Click the “Calculate” button to compute the missing values.
– View Results: The calculated values will be displayed along with the formulas used for each calculation.
Note: Input any two fields to calculate the remaining fields. Ensure you provide accurate data for correct results.

Applications of Ohm’s Law

Ohm’s Law has various applications in both theoretical and practical contexts, including:
– Designing Electrical Circuits: Engineers use Ohm’s Law to design and analyze electrical circuits to ensure they work within specified limits.
– Troubleshooting: Technicians use the law to diagnose and fix electrical problems by measuring voltage, current, and resistance.
– Power Consumption: It helps in calculating power consumption of electrical devices and optimizing their efficiency.
– Safety: Ensuring that electrical systems operate within safe limits to prevent overheating and potential hazards

Case-Study Examples

Example 1: Residential Electrical Circuit
In a typical Indian household, if an electric heater is rated at 220 volts and has a resistance of 50 ohms, Ohm’s Law can be used to find the current flowing through the heater and its power consumption.

• Given: Voltage (V) = 220 V, Resistance (R) = 50 Ω
• Calculation:
  • Current (I) = V / R = 220 / 50 = 4.4 A
  • Power (P) = V × I = 220 × 4.4 = 968 W

Example 2: Industrial Application
In a small manufacturing unit, an electric motor operates at 440 volts with a current of 10 amperes. If the resistance of the motor windings is to be determined, Ohm’s Law helps in calculating it.

• Given: Voltage (V) = 440 V, Current (I) = 10 A
• Calculation:
  • Resistance (R) = V / I = 440 / 10 = 44 Ω

Example 3: Solar Panel System
For a solar panel system in India, if the output voltage of a solar panel is 24 volts and the current is 5 amperes, Ohm’s Law can be used to find the resistance of the load connected to the panel.

• Given: Voltage (V) = 24 V, Current (I) = 5 A
• Calculation:
  • Resistance (R) = V / I = 24 / 5 = 4.8 Ω