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Current
- Electrons move from the negative terminal of
a battery to the positive terminal of a
battery.This movemnt of electrons is called
current
- Unit for current:current is
measured in
ampere(A).A.K.A amp.Also
the symbol for current is I
- Conventional current is the
opposite of the current
definition
- Current is the electrons flowing
along the wire
- Current is the electrons flowing
along the wire
- Conventional current is the
opposite of the current
definition
- Unit for current:current is
measured in
ampere(A).A.K.A amp.Also
the symbol for current is I
- Potential difference(voltage) is a measure of the
ability of the charges to do a particular task.e.g get
from place to place
- N.B. another word
for ability is
potential
- Voltage is measured in Volts (V)
- Voltage is measured in Volts (V)
- N.B. another word
for ability is
potential
- The opposition to the flow of electrons is called
resistance.ex copper is a good conductor of
electricity because it has low resistance
- resistance is measured in the
ohm,(the symbol is the greek word
omega or R)
- the formula for current is
I=V X R
- the formula for current is
I=V X R
- resistance is measured in the
ohm,(the symbol is the greek word
omega or R)
- Current only flows in a complete circuit
- Remember symbols
used in electricity
- remember experiment:to show electrical
conduction in different materials and
classify each as conductor or insulator
- Remember experiment to prove ohm's law
- Remember symbols
used in electricity
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