Electric Circuits

Views:

Category: Education

Presentation Description

No description available.

By: 123unodos (86 month(s) ago)

Very good

By: dcoolcat10 (87 month(s) ago)

Good presentation

By: fffh (96 month(s) ago)

sir

By: paulalouca (98 month(s) ago)

I liked it

By: shawaheen (99 month(s) ago)

drgre

See all

Presentation Transcript

Slide 1:

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

Slide 2:

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.

Slide 3:

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

Slide 4:

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.

Slide 5:

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

Slide 6:

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

Slide 7:

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

Slide 9:

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