⚡ 1. What is Electrical Energy?
Imagine you have a water pipe. Inside, water is ready to flow. If you open the tap, water rushes out. Now replace water with electrons, and the pipe with wires.
Electrical energy is the energy carried by moving electrons inside a wire.This energy can do things: light a bulb, spin a fan, charge your phone .It’s like tiny invisible energy workers running through wires to do jobs!
When electrons move because of voltage (like a push), energy flows.That moving energy is called electrical energy.
🔨 2. What is Work? (in Electricity)
In physics, work means: “How much energy you used to move something.”In electricity, work is the energy used to push electrons through a circuit.
If you use electrical energy to move electrons and light a bulb for 5 seconds, you are doing electrical work . Work is just energy transferred or used.
⚙️ 3. What is Power?
Power means: How fast you are doing work or using energy . Like a superhero: one hero saves 10 people in 10 seconds, another in 1 second. Who’s stronger? The faster one. That’s more power.
So, power tells us:
“How quickly electrical energy is being used.”
⚡ 4. What is Electrical Power? (Formula: P = V × I)
Electrical Power = Voltage × Current .
This means:
“The energy used per second is equal to how hard you’re pushing electrons (Voltage, V) multiplied by how many electrons are flowing (Current, I).”
Deep idea:
Voltage (V) is like the push given to electrons (the pressure).
Current (I) is the number of electrons flowing every second.
Power (P) tells us how much energy is being used every second.
🔋 5. What is Voltage and How it Connects to Energy?
Voltage is like electrical pressure .It tells us how much energy each electron is carrying.
High voltage means each electron has more energy.Low voltage means each one has less.
So,
Voltage is energy per charge. In science language:1 volt = 1 joule of energy per 1 coulomb of charge.
This is why we write:V = W / Q(Voltage = Work done / Charge)
🔌 6. How to Calculate Electrical Energy?
To calculate energy, you just see how much power is used and for how long.
Formula:Energy (E) = Power × Time
If you know the power (P = V × I),Then:E = V × I × t
Where:
E = Energy in joules
V = Voltage in volts
I = Current in amps
t = Time in seconds
📦 Real-Life Example:
You have a 100-watt bulb (that means P = 100 W), and you keep it on for 10 seconds.
Energy used = 100 × 10 = 1000 joules
That’s how much electrical energy the bulb used to shine.
✅ Quick Recap (No Table, Just Words):
Electrical energy is carried by moving electrons.
Work is using energy to move charges.
Power is how fast the energy is being used.
Electrical Power is found using: P = V × I
Voltage tells how much energy each electron has.
Energy used is calculated using: E = V × I × t
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