Prac - Current & voltage in a circuit

100 %
0 %
Information about Prac - Current & voltage in a circuit
Education

Published on February 16, 2014

Author: cristalbeam

Source: slideshare.net

Description

Science experiment on measuring current and voltage in different parts of the circuit.

CURRENT & VOLTAGE IN A CIRCUIT YEAR 9 – ELECTRICITY By S. Choi

AIM & HYPOTHESIS •  Aim: To measure the current and voltage at different parts of an electric circuit. •  Hypothesis: Write your own hypothesis on your experimental report.

EQUIPMENT •  1 × DC power pack •  1 × light globe •  1 × switch •  1 × ammeter •  1 × voltmeter •  6 × connecting wires

RISK ASSESSMENT Risk Injury Prevention

METHOD 1.  Set up the circuit as shown in the diagram on the RHS. 2.  With the switch OPEN, use the ammeter to measure the electric current at points: B, C & D. Record the results in the results table. 3.  With the switch CLOSED, repeat step 2. Record the results in the results table.

METHOD 4.  With the switch OPEN, use the voltmeter to measure the voltage across: -  Points E & A (power pack) -  Points A & B (connecting wire) -  Points B & C (switch) -  Points C & D (light globe) -  Points D & E (connecting wire) Record the results in the results table. 5.  With the switch CLOSED, repeat step 4. Record the results in the results table.

RESULTS Current in different parts of the circuit Switch Circuit location B OPEN C D B CLOSED C D Current (A)

RESULTS Voltage in different parts of the circuit Switch Circuit location Across E & A (power pack) Across A & B (connecting wire) OPEN Across B & C (switch) Across C & D (light globe) Across D & E (connecting wire) Across E & A (power pack) Across A & B (connecting wire) CLOSED Across B & C (switch) Across C & D (light globe) Across D & E (connecting lead) Voltage (V)

DISCUSSION 1.  Was the current at points B, C & D the same or different when the switch was CLOSED? 2.  Was the current at points B, C & D the same or different when the switch was OPEN? 3.  Across which parts of the circuit were there readings in the voltmeter when the switch was CLOSED? 4.  Across which parts of the circuit were there readings in the voltmeter when the switch was OPEN? 5.  Explain how voltmeter readings occur even though the switch is not closed. 6.  Compare the voltage across the terminals of the power pack with the voltage across the light globe.

CONCLUSION •  Write your own conclusion of the experiment.

Add a comment

Related presentations

Related pages

Prac - Current & voltage in a circuit - HubSlide

Transcripts - Prac - Current & voltage in a circuit. 1. CURRENT & VOLTAGE IN A CIRCUIT YEAR 9 – ELECTRICITY By S. Choi; 2. AIM & HYPOTHESIS • Aim: To ...
Read more

AC Circuits - Home | Boston University Physics

In alternating current (AC) circuits, ... In AC circuits we'll talk a lot about the phase of the current relative to the voltage. In a circuit which only ...
Read more

Current vs Voltage - Difference and Comparison | Diffen

Contents 1 Relationship Between Voltage and Current 2 Circuit 3 Symb. Health; Science; Tech; Home; Food; ... "Current vs Voltage." Diffen.com. Diffen LLC, ...
Read more

Voltage, Current, Resistance, and Ohm's Law - learn ...

When describing voltage, current, and resistance, ... The LED introduces something called a “voltage drop” into the circuit, ...
Read more

background:science.engineering.concepts:current.voltage ...

Current, Voltage & Circuits. Current ... The power dissipated in some part of a circuit is equal to the voltage difference across that part of the circuit ...
Read more

Electronics Club - Voltage and Current

... Voltage and Current. ... and current will flow if the circuit is complete. Voltage is sometimes ... It is possible to have voltage without current, ...
Read more

BBC - KS3 Bitesize Science - Electric current and voltage ...

Current in series circuits. The current is the same ... The current in a series circuit depends upon the ... More from Electric current and voltage :
Read more

Voltage and Current : Basic Concepts Of Electricity ...

Voltage and Current Chapter 1 ... When a voltage source is connected to a circuit, the voltage will cause a uniform flow of electrons through that circuit ...
Read more

Series and Parallel Circuits - physicsfiles.com

The total voltage across a series circuit is equal ... Always keep in mind how current and voltage behave in ... Title: Series and Parallel Circuits.PDF ...
Read more