proffessional and colorful ohms law presentation for student

this presentation explains ohms law with clear theory, practical models, and colorful diagrams. it is designed like a university student presentation but simplified for easy understanding.

1. Ohm’s Law Project Presentation
University-Level Demonstration with
Water Analogy

2. Introduction
•• Ohm’s Law is a fundamental principle in
electrical engineering.
•• It relates Voltage (V), Current (I), and
Resistance (R).
•• Our project demonstrates Ohm’s Law using
both an electronic circuit and a water flow
analogy.
•• Focus: making the concept simple, visual,
and interactive.

3. Objective
•• To demonstrate Ohm’s Law: V = I ×R
•• To show the relationship between Voltage,
Current, and Resistance
•• To use water flow analogy for better
understanding
•• To analyze the effect of external factors like
temperature

4. Ohm’s Law Theory
•• Ohm’s Law: V = I ×R
•Voltage (V): Driving force (comparable to
water pressure)
•Current (I): Flow of electric charges
(comparable to water flow)
•Resistance (R): Opposition to flow
(comparable to a gate/valve)
•Relationship:

5. Water Flow Analogy
•• Water Tank = Voltage (V)
•• Water Flow = Current (I)
•• Gate/Obstacle = Resistance (R)
•• LED brightness = Amount of current
•This analogy helps visualize Ohm’s Law easily.

6. Circuit Model
•• Components:
•-Battery (Voltage Source)
•-Resistor (Resistance)
•-LED (Current Indicator)
•-Switch/Knob for interaction
•• Demonstrates the real behavior of Ohm’s
Law.

7. Demonstration Steps
•1. Open gate → More water flow → LED
brighter
•2. Close gate → Less water flow → LED
dimmer
•3. Increase resistance → Current decreases
•4. Increase voltage → Current increases
•5. Apply heat (temperature button) →
Resistance rises → Current drops

8. Graphical Representation
•• V-I Graph under normal conditions →
Straight line
•• V-I Graph under high temperature → Curved
line
•These graphs show that Ohm’s Law holds only
if external factors remain constant.

9. External Factors
•• Ohm’s Law is valid only if external conditions
are constant
•• Temperature rise → Resistance increases →
Current decreases
•• Pressure and material properties also affect
resistance
•• Important to highlight in practical
demonstrations

10. Conclusion
•• Ohm’s Law connects Voltage, Current, and
Resistance
•• Water analogy makes the principle easy to
visualize
•• Interactive model demonstrates real-world
effects
•• External factors like temperature affect
accuracy
•• The project makes learning both engaging
and scientific