ELECTRICAL CIRCUITS S.MORRIS 2006

Slides:



Advertisements
Similar presentations
S.MORRIS 2006 ELECTRICAL CIRCUITS More free powerpoints at
Advertisements

ELECTRICAL CIRCUITS.
S.MORRIS 2006 Electricity and Magnetism More free powerpoints at All you need to be an inventor is a good imagination and a pile.
Topic 2 Electricity Within a Circuit. Static and Current Electricity: When charged particles build up in an object it is called static electricity. Another.
S.MORRIS 2006 ELECTRICAL CIRCUITS More free powerpoints at
ELECTRICAL CIRCUITS. The CELL The cell stores chemical energy and transfers it to electrical energy when a circuit is connected. When two or more cells.
S.MORRIS 2006 ELECTRICAL CIRCUITS More free powerpoints at
ELECTRICAL CIRCUITS. Ohm’s Law I = V / R Georg Simon Ohm ( ) I= Current (Amperes) (amps) V= Voltage (Volts) R= Resistance (ohms)
ELECTRICAL CIRCUITS AND COMPONENT SYMBOLS 1. Some circuit symbols In circuit diagrams components are represented by the following symbols; cellbatteryswitchlamp.
Electricity Electrical conductors and insulators.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS.
ELECTRICAL CIRCUITS.
Ohm’s Law V = I x R Georg Simon Ohm ( ) I= Current (Amperes or amps) V= Voltage (Volts) R= Resistance (ohms)
Current Electricity 1. What is Electric Current? Electric current is the flow of electricity through a conductor. The current is caused by the movement.
Warm-up 1.List some things that you already know about magnets. 2.Do you think magnets could cause any type of forces or motion? Why? 3.Based on what you.
S.MORRIS 2006 ELECTRICAL CIRCUITS More free powerpoints at
S.MORRIS 2006 Currents CIRCUITS More free powerpoints at
Measuring Current and Voltage in Circuits. measuring current Electric current is measured in _______using an ammeter connected ________________ in series.
Measuring Voltage and Current Aims Know the units of voltage and current Know how to measure voltage and current.
ELECTRICAL CIRCUITS. What is an electric current? An electric current is a flow of electrons through wires and components. + - In which direction does.
ELECTRICAL CIRCUITS. Circuits Circuits are paths which small particles flow through to provide us with electricity for lights, appliances, and other devices.
Series and Parallel Circuits
6.2 Measuring electricity. What we are learning about 1.What is current, voltage and resistance? 2.How are they measured? 3.What is the relationship between.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
Electric Circuits.
ELECTRICAL CIRCUITS.
Electricity How & where it’s used Review of the atom
Electric Circuits.
Circuits, Current and Voltage
Electrical Current & Circuits
Electricity How & where it’s used Review of the atom
Circuits, Current and Voltage
ELECTRICAL CIRCUITS More free powerpoints at
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS.
ELECTRICAL CIRCUITS S.MORRIS 2006
Electrical Circuits.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison Lesson Objectives: To explain the difference.
Electrical Circuits.
ELECTRICAL CIRCUITS.
ELECTRICAL CIRCUITS S.MORRIS 2006
Series and parallel circuits
ELECTRICAL CIRCUITS S.MORRIS 2006
Objective Students will be able to compare series and parallel circuits in order to describe how energy is transferred to produce light.
ELECTRICAL CIRCUITS WALT - Explain how electrons flow through a circuit S.MORRIS 2006 More free powerpoints at
ELECTRICAL CIRCUITS S.MORRIS 2006
Circuits, Current and Voltage
Circuits.
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS.
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
Title: 2/28 ELECTRICAL CIRCUITS
Components of an Electrical Circuit
Basic Circuits.
ELECTRICAL CIRCUITS.
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS More free powerpoints at
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS S.MORRIS 2006
ELECTRICAL CIRCUITS All you need to be an inventor is a good imagination and a pile of junk. -Thomas Edison.
Presentation transcript:

ELECTRICAL CIRCUITS S.MORRIS 2006 More free powerpoints at www.worldofteaching.com

The CELL The cell stores chemical energy and transfers it to electrical energy when a circuit is connected. When two or more cells are connected together we call this a Battery. The cells chemical energy is used up pushing a current round a circuit.

What is an electric current? An electric current is a flow of microscopic particles called electrons flowing through wires and components. - + In which direction does the current flow? from the Negative terminal to the Positive terminal of a cell.

simple circuits Here is a simple electric circuit. It has a cell, a lamp and a switch. wires cell lamp switch To make the circuit, these components are connected together with metal connecting wires.

simple circuits When the switch is closed, the lamp lights up. This is because there is a continuous path of metal for the electric current to flow around. If there were any breaks in the circuit, the current could not flow.

circuit diagram Scientists usually draw electric circuits using symbols; cell lamp switch wires

circuit diagrams In circuit diagrams components are represented by the following symbols; cell battery switch lamp buzzer ammeter voltmeter motor resistor variable resistor

types of circuit There are two types of electrical circuits; SERIES CIRCUITS PARALLEL CIRCUITS

SERIES CIRCUITS The components are connected end-to-end, one after the other. They make a simple loop for the current to flow round. If one bulb ‘blows’ it breaks the whole circuit and all the bulbs go out.

PARALLEL CIRCUITS The components are connected side by side. The current has a choice of routes. If one bulb ‘blows’ there is still be a complete circuit to the other bulb so it stays alight.

measuring current Electric current is measured in amps (A) using an ammeter connected in series in the circuit. A

measuring current A A This is how we draw an ammeter in a circuit. PARALLEL CIRCUIT SERIES CIRCUIT

measuring current SERIES CIRCUIT current is the same at all points in the circuit. 2A 2A PARALLEL CIRCUIT 2A 2A current is shared between the components 1A 1A

copy the following circuits and fill in the missing ammeter readings. ? 3A 3A 4A ? 1A ? ? 4A 4A 1A ? 1A

measuring voltage The ‘electrical push’ which the cell gives to the current is called the voltage. It is measured in volts (V) on a voltmeter V

measuring voltage Different cells produce different voltages. The bigger the voltage supplied by the cell, the bigger the current. Unlike an ammeter a voltmeter is connected across the components Scientist usually use the term Potential Difference (pd) when they talk about voltage.

measuring voltage V V This is how we draw a voltmeter in a circuit. SERIES CIRCUIT PARALLEL CIRCUIT

measuring voltage V V V V

series circuit voltage is shared between the components 3V 1.5V 1.5V

parallel circuit voltage is the same in all parts of the circuit. 3V

measuring current & voltage copy the following circuits on the next two slides. complete the missing current and voltage readings. remember the rules for current and voltage in series and parallel circuits.

measuring current & voltage

measuring current & voltage b) 6V 4A A V A V A

answers a) b) 6V 6V 4A 4A 6V 4A 4A 3V 3V 2A 4A 6V 2A