1. CURRENT
AND
VOLTAGE

2. Current

3. Is the rate at which electric
charge flows past a point in a
circuit. In other words, current
is the rate of flow of electric
charge.
The symbol for current is I and
the unit is a/amps/amperage. 1
ampere is equal to 1 second.

4. In series connection, current
is the same through all
components connected in a
series
In parallel connection, current
gets distributed over
components connected in
parallel.

5. Voltage

6. Also called electromotive force,
is the potential difference in
charge between two points in
an electrical field. In other
words, voltage is the energy per
unit charge.
The symbol for voltage is V and
the unit is v/volts/voltage.

7. In series connection, voltage
gets distributed over
components connected in
series.
In parallel connection, voltages
are the same across all
components connected in
parallel.

8. The Relationship
of Current and
Voltage:

9. 
Voltage is the cause and
current is the effect. Voltage
can exist without current but
current cannot flow without
voltage.