CIRCUIT SPARKS ELECTRICAL LAB

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CIRCUIT SPARKS

Electrical Lab

Learn electrical engineering by changing real values. Explore power, energy, Ohm's Law, transformers and resistors through a simple interactive laboratory.

⚡ Interactive 📱 Mobile Friendly 🧮 Live Calculation 🎓 Educational

⚡ Arjun's Energy Desk

Change any value below. The electricity consumption and cost are calculated automatically.

Appliance Power

Watts (W)

Daily Usage

Hours per day

Electricity Rate

₹ per kWh / electricity unit

Supply Voltage

Volts (V)

Daily Energy Consumption

3.00 kWh/day

₹24.00 Daily Cost

₹720 Approx. 30-Day Cost

₹8,760 Approx. Yearly Cost

4.35 A Approx. Current

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Maya: Electrical energy is power multiplied by time. Increase the appliance wattage, usage time or electricity tariff and watch the cost change immediately.

🔌 Ohm's Law Lab

Ohm's Law connects voltage, current and resistance.

V = I × R

Voltage

Voltage is the electrical potential difference that pushes charge through a circuit.

Unit: Volt (V)

Current

Current is the rate of flow of electric charge.

Unit: Ampere (A)

Resistance

Resistance opposes the flow of electrical current.

Unit: Ohm (Ω)

Example

For 12 V across a 6 Ω resistor:

I = 12 ÷ 6 = 2 A

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If resistance increases while voltage stays constant, current decreases.

⚙️ Transformer Lab

Transformers change AC voltage using electromagnetic induction.

V₂ / V₁ = N₂ / N₁

Step-Up Transformer

Secondary voltage is higher than primary voltage.

N₂ > N₁

Step-Down Transformer

Secondary voltage is lower than primary voltage.

N₂ < N₁

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Transformers are widely used in power transmission and distribution systems to efficiently change voltage levels.

🟫 Resistor Lab

Resistors control current and divide voltage in electrical and electronic circuits.

Series

Rₜ = R₁ + R₂ + R₃

Resistances add together.

Parallel

1/Rₜ = 1/R₁ + 1/R₂ + 1/R₃

Total resistance becomes lower than the smallest individual branch resistance.

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Resistor values are commonly represented using colour bands, numerical markings or printed codes.

🏆 Circuit Sparks Challenge

Test your electrical engineering basics.

A 1000 W appliance operates for 3 hours each day. How much electrical energy does it consume per day?

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Formula: Energy (kWh) = Power (W) ÷ 1000 × Time (hours).

Created as a Circuit Sparks educational learning prototype • Interactive Electrical Engineering Lab

© Amogha A K. All Rights Reserved.