Biography of Nelson Mandela
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Rolihlahla Mandela was born into the Madiba clan in the village of Mvezo , Transkei, on 18
July 1918. His mother was Nonqaphi Nosekeni and his father was Nkosi Mphakanyiswa
Gadla Mandela, principal
CURRENT, POTENTIAL DIFFERENCE AND RESISTANCE
Current is a measure of how many electrons flow per second through a circuit or past any one point in a
circuit. It is measured in units known as AMPERES (A). Electrons have negative charges and billion
What is a series circuit ?
How many light bulbs are there in your home ?
How many other electrical devices do you have ?
Must they all be working if you want to use just one ?
Do they all stop working if you shut off just one ?
Of course not ! Homes are n
If electrons are given a _ _ or path to travel around and these electrons are allowed to
transfer their energy to a device and make it do work, you have an _ _.
Parts of an Electric Circuit
1. _ - provides the electrons for the circuit.
DRAWING CIRCUIT DIAGRAMS
use the correct symbol for each component ( take time to draw it accurately )
draw connecting wires as straight lines, using a ruler ( making the circuit as a rectangular diagram
label components such as cells with their values
Bill Nye: Current Electricity
Electricity is _.
A closed path for electrons to travel through is called a(n) _ _.
The word circuit comes from _.
Electrons flowing through a wire are similar to _ .
Batteries will last lon
PARTS OF AN ELECTRIC CIRCUIT
An electric circuit is a controlled path for the flow of electrons ( known as a current ). By convention,
electrons leave the negative terminal of the source and enter back at the positive terminal.
1. Source of Energy
We have arrived at that brave new world that seemed so distant in 1932 when Aldous Huxley
wrote about human beings created in test tubes in what he called a hatchery. In recent weeks, we
learned that scientist have created human embryos in test tubes sole