Basic Electricity - Senior Secondary 1 - Measuring instruments

Measuring instruments

Get it on Google Play
Get it on the Apple App Store
  1. Home
  2. Comprehensive Lesson Plan and Notes
  3. Senior Secondary 1
  4. Measuring instruments

TERM: 2ND TERM

WEEK ONE

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: MEASURING INSTRUMENTS

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Define measuring instruments

II.) Identify and categorise some common measuring instruments

III.) State the merits of measuring instruments

IV.) State the demerits of measuring instruments

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of measuring instruments and categorise them base on their functions

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher state and explain the merits and demerits of measuring instruments

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

MEASURING INSTRUMENTS

Measuring instruments are devices or tools used to quantify, monitor, or evaluate physical quantities such as voltage, current, resistance, temperature, pressure, or frequency in various fields including science, engineering, and industry. These instruments provide numerical data or graphical representations that help in analyzing, understanding, and controlling the properties or behaviors of the system being measured.

Some common measuring instruments categorized based on their functions:

  1. Voltage Measurement: These are instruments used for measuring the voltage in a circuit, e.g; Voltmeter, Oscilloscope
  2. Current Measurement: These are instruments used for measuring the amount of current in a circuit. E.g; Ammeter, Clamp meter
  3. Resistance Measurement: These instruments are used for the measurements of resistance in a circuit. E.g; Ohmmeter, Multimeter (includes resistance measurement function)
  4. Power Measurement: These are instruments used for the measurements of power in a circuit e.g; Wattmeter, Power analyzer

Merits of measuring instruments

  1. Accuracy: Many modern instruments offer high levels of accuracy, providing precise measurements.
  2. Versatility: Some instruments, like multimeters, can measure multiple parameters, increasing their usefulness.
  3. Ease of Use: User-friendly interfaces and intuitive designs make operating measuring instruments straightforward.
  4. Portability: Many instruments are compact and portable, allowing for measurements to be taken in various locations.
  5. Real-time Monitoring: Some instruments offer real-time data acquisition, enabling continuous monitoring and analysis.

Demerits of measuring instruments

  1. Cost: High-quality measuring instruments can be expensive, especially those with advanced features or capabilities.
  2. Calibration: Instruments require periodic calibration to maintain accuracy, which can be time-consuming and costly.
  3. Complexity: Some instruments, particularly those with advanced functionalities, may have a steep learning curve.
  4. Fragility: Certain instruments are delicate and prone to damage if mishandled or exposed to harsh conditions.
  5. Limited Range: Some instruments may have limitations in terms of the range of values they can measure accurately..

EVALUATION: 1. What are measuring instruments

  1. Mention 3 measuring instruments
  2. Mention 3 merits of measuring instruments
  3. Mention 3 demerits of measuring instruments

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively