Current electricity refers to the flow of electric charges through conductors in a circuit. It requires a complete circuit and a power source to function, with different behaviors in series and parallel circuits impacting current flow and bulb brightness. In series circuits, removing a bulb stops the flow, whereas in parallel circuits, bulbs remain lit if one is removed, allowing individual control.

1. Current
Electricity
How can current
electricity be controlled?

2. Current Electricity
Electricity is a flow of electric charges (electrons) along
conductors in an electric circuit.
This flow of electric charge (electron) is called a current.
Conductors are materials which have free electrons and it
allows current electricity to pass through it.

3. MEASURING CURRENT

4. MEASURING CURRENT

5. MEASURING CURRENT

6. Question 1

7. Current Electricity
An electric current only flows when there is a complete
circuit for the current.
A circuit also needs something to ‘push’ the current around
the circuit , such as a cell or a power pack.

8. Cells or Battery
(Power pack)

9. ELECTRIC CIRCUITS

10. BULB

11. SWITCH

12. ELECTRIC CELL

13. Question 2

14. SERIES CIRCUIT
The 3 light bulbs are arranged in series.
Each component is joined one after the
other to form a single path.

15. SERIES CIRCUIT
 If one bulb in a series circuit is removed or broken, no
current flows.
 The remaining bulbs do not light up.
 Because the circuit is opened and incomplete.
 If one more bulb is added in the circuit, then the bulbs will
be dimmer because the current in the circuit is reduced.

16. CURRENT IN SERIES CIRCUIT
Current is the
same at all points
in the series
circuit.
A1
A2
A3
A1 = A2 = A3

17. PARALLEL CIRCUIT
 There is more one loop.
 Each bulb can be controlled individually.
 If one more bulb is added in the circuit, then the bulbs will
stay at the original brightness. because the current
through each bulb stays the same.

18. PARALLEL CIRCUIT
If one bulb breaks or removed, the other bulbs on
the circuit remains lit.
Because the circuit remains closed.

19. CURRENT IN PARALLEL CIRCUIT
Current is shared
between the
components in the
parallel circuit.
A1 = A2 + A3 + A4

20. VOLTAGE IN PARALLEL CIRCUIT
Voltage is same in all the parts of the circuit.

21. Try this question..

22. Try this question..

23. ANSWERS

24. Question 4

25. Question 5

26. Question 6