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Blue Gem 💎 Empire
64 days agoWhat is Electric Charge?
Definition:
Electric charge is a fundamental property of matter that causes it to experience a force when placed in an electric or magnetic field.
Explanation:
There are two types of charges: positive and negative. Like charges repel each other, while unlike charges attract. Electric charge is quantized, it comes in small, discrete units carried by particles such as protons (+) and electrons (–). The SI unit of charge is the coulomb (C).
Imagine:
Think of rubbing a balloon against your hair. The balloon becomes negatively charged and sticks to the wall because opposite charges attract.
In simple terms:
Electric charge is what makes objects push or pull on each other electrically.
Formula (Coulomb’s Law):
F = k (q₁q₂) / r²
Where:
• F = electrostatic force (N )
• k = Coulomb’s constant (9 × 10⁹ N·m²/C²)
• q₁, q₂ = charges (C)
• r = distance between charges (m)
Key Points:
• Two types: positive (+) and negative (–).
• Like charges repel, unlike charges attract.
• Conserved, total charge in a system remains constant.
• Quantized in multiples of the electron charge (1.6 × 10⁻¹⁹ C).
Examples:
• Proton has positive charge (+e).
• Electron has negative charge (–e).
• Neutral objects have equal amounts of positive and negative charges.
Applications / Relevance:
• ⚡ Electricity – flow of charges creates current
• 🔋 Electronics – batteries, capacitors, circuits
• ⚛️ Atomic structure – charge holds atoms together
• 🛰 Space science – charged particles in cosmic rays
• 📚 Education – foundation of electromagnetism
Question:
Can electric charge be created or destroyed.
Answer
No, electric charge is conserved. It can only be transferred from one body to another.