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Parallel Circuit Voltage & Resistance Lab

This document summarizes a student lab experiment on measuring voltage and resistance in a parallel circuit. The experiment involves creating a parallel circuit with 4 light bulbs, connected to 4 switches. The students measure and record the resistance of each light bulb and the voltage across each component with a tester. Their results show that in a parallel circuit, all components receive the full circuit voltage, while the resistance and current divides across the different paths. They conclude that resistors in parallel have the same voltage but different current values, acting as current dividers. They recommend supervision during experiments and making future experiments more complex.

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Tyrone Bautista
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133 views6 pages

Parallel Circuit Voltage & Resistance Lab

This document summarizes a student lab experiment on measuring voltage and resistance in a parallel circuit. The experiment involves creating a parallel circuit with 4 light bulbs, connected to 4 switches. The students measure and record the resistance of each light bulb and the voltage across each component with a tester. Their results show that in a parallel circuit, all components receive the full circuit voltage, while the resistance and current divides across the different paths. They conclude that resistors in parallel have the same voltage but different current values, acting as current dividers. They recommend supervision during experiments and making future experiments more complex.

Uploaded by

Tyrone Bautista
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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VOLTAGE AND

RESISTANCE
MEASUREMENTS
(Parallel)

LAB 2

Basic Electrical Engineering

Engr. Pedrito Dayahan

Members:

Altez, John Mark T.

Bautista, Kent Tyrone D.

Salva, Ramon

Santos, Irish

Zarsadias, Timothy
BSME - 2B

Introduction

Electricity is a form of energy that is carried through wires and is used to operate machines, lights,
etc.

It involves different types depending on its structure or what we called circuits which are defined
as the complete path that an electric current travels along. It consists of a series and parallel or
combination of both circuits.

A parallel circuit is a closed circuit in which the current divides into two or more paths before
recombining to complete the circuit. Each load connected in a separate path receives the full circuit
voltage, and the total circuit current is equal to the sum of the individual branch currents

Hypothesis: (S=Switch, L=Light) S1=L1, S2=L2, S3=L3, S4=L4 whereas L1<-->L2, L2<-->L3,

L3<-->L4 is a parallel circuit.

List of materials:

1. Piece of Wood (½)

. Lamp Receptacle (Surface Type 4 pcs)

3. Incandescent Lamp (24 volts 4pcs)

4. Single Switch Flush Type (220 volts 4pcs)

5. Wire TW 2.0 mm²

6. Circuit Breakers 15A (1 Set)

7. Metal Screw

8. Molding (½ " ∅)

9. Male Plug
Tools and equipment:

1. Screwdriver

. Tester

3. Hacksaw

Objective

1. Create a parallel circuit pattern which follows the rule of an effective current flow.

2. To make the bulb glow in accordance to the parallel circuit.

3. To make the students understand how electrical circuits work.

4. Express the idea of design of the students in making a parallel circuit that works

Procedure

1. Gather the necessary materials.


2. Strip the ends of the insulated wires.
3. Install the circuit breaker into the board.
4. Install the lamp receptacle, switch and molding to the board.
5. Attach your wire to the circuit breaker.
6. Attach the wire to the lamp receptacle and the other ends to the switch.
7. Make sure that the connection of the wires are correct.
8. Test your electrical circuit board.
9. Design your board.

Documentation
Resistance

Voltage
Table

Resistance

Switch 1 Switch 2 Switch 3 Switch 4

Light 1 20 10 6 4

Light 2 20 10 6 4

Light 3 20 10 6 4

Light 4 20 10 6 4

Voltage

Light 1 Light 2 Light 3 Light 4

Switch 1 230 V 230 V 230 V 230 V

Switch 2 230 V 230 V 230 V 230 V

Switch 3 230 V 230 V 230 V 230 V

Switch 4 230 V 230 V 230 V 230 V


Conclusion

After the utilization of the activity, we therefore conclude that the resistors connected in parallel
have the same voltage but differ in their currents values. In parallel circuit, the resistor serves as a
current divider, If connected in parallel, a single charge passing through the external circuit would only
pass through one of the light bulbs.

Recommendations

After performing the activity, we therefore recommend that the experiment should be done safely.
It should be done in working area. Also in doing the project it is safer if the students have supervisions
from experts. And in experiment matters, we therefore recommend that it should be made more
complex to test more hypothesis and find more reason in other phenomena.

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