Watt's Law
Lesson Plan: Watt's Law
Grade Level: High school (10th-12th grade)
Subject: Applied Design, Skills, and Technology (ADST) Electronics. Also applicable for Science and Physics.
Duration: ~60 minutes
Required Equipment: Power Supply, Multimeter, Laptop with Wi-Fi access
Required Components: Breadboard, Light Bulbs (3W) x 2,
10 ฮฉ / 3W Resistor
Procedure:
Introduction (10 mins)
Introduce the concept of power in electronics.
Discuss Wattโs Law and its mathematical representation: P= V x I.
Highlight the practical implications of power consumption in devices.
Navigate students through a chosen simulation software/platform.
Virtually set up a basic circuit, observing and noting the behavior of voltage and current.
Use the software's features to calculate power consumption using Watt's Law.
Hands-on Activity: Measuring Power (20 mins)
Demonstrate the setup of a basic circuit on a breadboard.
Guide students to measure voltage and current using the multimeter.
Calculate the power consumed by the circuit using Wattโs Law.
Discuss factors affecting power consumption and ways to optimize it.
Interactive Discussion (10 mins)
Present various real-world scenarios and electronic components.
Engage students in calculating power requirements using Wattโs Law.
Discuss the significance of power ratings in devices and components.
Conclusion and Recap (5 mins)
Review the fundamental principles of Watt's Law and its importance in electronics.
Encourage students to consider power consumption in their daily life and understand its broader environmental implications.
Assessment:
Formative assessment: During the lesson, gauge students' understanding through their engagement in discussions, accuracy in calculations, and proficiency in setting up and measuring circuits.
Summative assessment: At the end of the lesson, students will undergo a written test encompassing theoretical questions on Watt's Law, practical calculations, and scenarios where they need to predict power consumption. Their practical skills might also be tested by presenting them with a circuit and asking them to measure and calculate its power consumption accurately.
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