phy lab rep 1.5 using multimeter

8/13/2019 Phy Lab Rep 1.5 Using Multimeter

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PHYSICS LABORATORY REPORT

EXPERIMENT 1.5 : USING DIGITAL MULTIMETER

NAME : NURAINA SAKINA BINTI ZAKRI

NRIC : 951010-11-5076

GROUP : 11SC2

STUDENT ID : 1311171218

LECTURER : MR MOHD AZUAN BIN MOHD AZLAN


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INTRODUCTION

Electrical measurements are essential techniques for trouble shooting electronic

equipment/circuits. The three quantities of voltage, current, and resistance are the basis for

most analyses of both constant (direct current DC) and time variant (alternating current AC)

circuits. Frequency, capacitive reactance, and inductive reactance are three additional factors

related to AC circuits.

Digital Multimeters (DMM) are convenient, accurate, portable, and durable. The

multimeter can be used to measure direct current and voltages, alternating current and

voltages and also the resistances. The different types of measurement and scales are selected

using the dial at the center of the digital multimeter.


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OBJECTIVE

Become familiar with DMM functions and characteristics; and with the techniques for using

a DMM to measure resistance.

APPARATUS/EQUIPMENT

1 variable power supply, 62resistor, 51resistor, 220resistor, multimeter, ammeter

PROCEDURE

1. The output of the power is set up to 4V DC.2. The circuit is set up as shown in Figure A3. The supply is switched on and the reading of the meters for R1 are taken. The error on these

reading is recorded by using the smallest scale division as an estimate.

4. The meter is moved to measure the current and voltages for the other resistors.5. Based on Ohms law and combinations of series and parallel circuit. The currents and

voltages are calculated. These calculations are compared with the measured values.

6. The percentage uncertainties of each measurement is calculated.

ASSUMPTIONS

There is no internal resistance, r throughout this circuit.


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phy lab rep 1.5 using multimeter

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