Electricity Basics Quiz

Electricity Basics

• Electricity is the flow of electrons from a negatively charged area to a positively charged area.
• It is a form of energy that can be harnessed and utilized to power various devices and systems.

Electric Charge

• Electric charge is a fundamental property of matter, measured in coulombs (C).
• There are two types of electric charge:
  • Positive charge (protons)
  • Negative charge (electrons)

Electric Current

• Electric current is the flow of electrons, measured in amperes (A).
• It is the movement of electrons from a negative terminal to a positive terminal.
• Current flows from higher potential to lower potential.

Electric Potential

• Electric potential is the potential energy per unit charge, measured in volts (V).
• It is the force that drives electric current.
• Higher potential is positive, lower potential is negative.

Resistance

• Resistance is the opposition to the flow of electric current, measured in ohms (Ω).
• It depends on the material, length, and cross-sectional area of the conductor.
• Higher resistance means less current flow.

Ohm's Law

• Ohm's Law states: V = I × R, where V is voltage, I is current, and R is resistance.
• It describes the relationship between voltage, current, and resistance.

Electric Power

• Electric power is the rate at which electric energy is transferred, measured in watts (W).
• It is the product of voltage and current: P = V × I.
• Higher power means more energy is transferred.

Circuits

• Electric circuits are paths through which electric current flows.
• There are two types of circuits:
  • Series circuits: components are connected one after the other.
  • Parallel circuits: components are connected between the same two points.

Safety Precautions

• Electric shock can be dangerous, even fatal.
• Take safety precautions when working with electricity:
  • Avoid overloading circuits.
  • Use protective gear (e.g., gloves, safety glasses).
  • Keep electrical components away from water.