Ohms Law required Practical

Slides:

Advertisements

Similar presentations

IV Characteristics Electricity Lesson 4.

Advertisements

AS Level Electricity - Circuits

Current. Electrons Flow - + Electrons are negatively charged and therefore flow from negative to positive e-

Noadswood Science,  To understand current-potential difference graphs Wednesday, May 13, 2015.

Current-Voltage Characteristics of a bulb In this experiment you are going to investigate how the current through a bulb changes according to the.

P2.3.1 – Static Electricity. Objectives, to understand that: –When certain electrical insulators are rubbed together they become electrically charged.

What is electric current? What is current measured in? What is the difference between a series and parallel circuit? How many circuit symbols can you draw?

Prepared By: Shakil Raiman.  Resistors is a device which can reduce the current.  The resistance of a wire is calculated by R=V/I (which comes from.

Mr Powell VI Characteristics Ohms Law Current/voltage characteristics For an ohmic conductor, a semiconductor diode and a filament lamp Candidates.

LDRs & Thermistors Noadswood Science, 2012.

Teaching note Just in case you have never tried this before. This is split into 6 spaced learning presentations. The idea is that each one is presented.

Circuit Electricity 4 th form IGCSE Textbook: parts of Chapters 7,9 & 10.

UNIT 1: ELECTRICITY AND ELECTRONICS (PART 3) TECHNOLOGIES ESO 3.

Explaining the shape of the current-voltage graph for the bulb

How hot is it? Current – Voltage graphs Dependence of resistance on heat LDRs and thermistors.

RESISTORS Always remember…… V = IR (V= voltage in volts; I = current in amps; R = resistance in ohms)

Electrical Resistance Electrical resistance is a measure of how difficult it is for electricity (electrons) to flow through a material. The units of resistance.

Turn up the heating The electric current Heating effects of a current Voltage – Current graphs.

Resistive Transducers Sensors Used in Electronics.

Additional Physics – Forces L/O :- To be able to recognise potential difference – current graphs Potential difference – current graph Exam Date -

5.3 More current – pd graphs The resistance of a filament lamp increases with increased temperature The resistance of a diode depends on the p.d. (voltage)

Unit 6 in four lessons Resistors.

Electricity 2 Thomas Edison Lesson Objectives I know some circuit symbols for common components. I know what is meant by resistance I know.

Additional Physics – Forces L/O :- To know how LDR’s are affected by light intensity LDR’s Exam Date -

Properties of Resistors Current of Electricity (Part 2)

OHM’S LAW AND ELECTRICAL POWER. OHM’S LAW “Provided the physical conditions, such as temperature, are kept constant, the resistance is constant over a.

Simple Electric Circuits. Menu Circuit Symbols Current Voltage Resistance Summary Table.

KEY WORDS: Insulating Electron Attract Repel Resistance Series ASSESSMENT: P2 REVISION – CHAPTER 4 – Current Electricity Electric symbols Electrical Charges.

Electrical Circuits Revision. KEY WORDS: Insulating Electron Attract Repel Resistance Series ASSESSMENT: P2 REVISION – CHAPTER 4 – Current Electricity.

6.2 ELECTRONICS. CAPACITOR An electrical device used to store electrical charge.

Ammeter voltmeter cell Indicator / light source diode Light emitting diode resistor Variable resistor thermistor Light dependent resistor heater Electric.

Circuits and Ohms Law Through Investigation, I understand the relationship between current, voltage and resistance. I can apply this knowledge to solve.

Electrical Circuits j Explain the design and use of circuits to explore variation of resistance – including for lamps, diodes ntc thermistors and.

Starter: use Pg to complete the table

Current is the rate of flow of….. Energy Charge protons

Properties of Resistors

Unit 1 Electricity, energy and waves

P2 Topic 2: Controlling and using electric currents

Electrical Circuits lesson 3

Starter Stick in the following (in the right places):

Electronic Components

Light Dependent Resistor

EDEXCEL IGCSE PHYSICS 2-4 Electrical Resistance

LDRs and Thermistors.

Series Circuit – 1 bulb Series Circuit – 1 bulb.

P2 REVISION – CHAPTER 7– Electricity

Electronics Revision Part 2

RESISTORS A resistor is used to reduce the flow of electricity in an electric circuit. Resistorscome in fixed or variable types.

Be able to describe how the resistance of LDRs and Thermistors varies.

Series and parallel circuits

Circuit Symbols Cell Battery Variable resistor A V Ammeter LED

Match the circuit symbols How many of these can you name?

A –Level Physics: Electrical Quantities: Semiconductors

Review Read the comments I have written in your book.

Electrical Resistance

Ohm’s law Part 2.

Draw and interpret circuit diagrams containing sources, switches, resistors (fixed and variable), heaters, thermistors, light-dependent resistors, lamps,

P2 Topic 2: Controlling and using electric currents

Electricity Summary Current and charge Q = I x t

AS Level Electricity - Circuits

P2 Topic 2: Controlling and using electric currents

Circuit Symbols Switch (open): Switch (closed): Battery: Cell:

Resistance components & Power

P2 REVISION – CHAPTER 2 – Electricity Answers

Draw the symbols for the below components: Cell: Battery:

P2 - Physics Circuits.

Describe the action of thermistors and light- dependent resistors and show understanding of their use as input transducers Thermistor A transducer is an.

Presentation transcript:

Ohms Law required Practical Electricity Ohms Law required Practical

Non Constants The resistance of components such as filament lamps, diodes, thermistors and LDRs is not constant; it changes with the current through the component. The resistance of a filament lamp increases as the temperature of the filament increases. The current through a diode flows in one direction only. The diode has a very high resistance in the reverse direction. The resistance of a thermistor decreases as the temperature increases. The resistance of an LDR decreases as light intensity increases.

Required practical 3 parts… 1 Resistor 2 Lamp 3 Diode

The characteristics of a resistor

The characteristics of a Lamp

The characteristics of a diode