The document discusses open and closed circuits, explaining that an open circuit is a discontinuous path where electric charge cannot flow, while a closed circuit is a continuous path that allows electric charge to flow. It provides examples of calculating current (I) using voltage (V) and resistance (R) in different parts of a circuit connected in series and parallel. It concludes by thanking the reader and providing contact information to request educational PowerPoint presentations.

1. Chapter - 12
Electricity
CBSE Previous Years
Science, Class 10
By Shivam Parmar
(Entrepreneur)

2. OPEN CIRCUIT CLOSED CIRCUIT
It is a discontinuous
path of an electric current.
It is a continuous
path of an electric circuit.
Electric charge Cannot flow. Electric charge can flow.
Key is open. Key is closed.

12. 10
2 × 10−3

20. I1 =
V1
R1

21. I2 =
V2
R2
=
6
5
= 1.2 A

25. 1
R′
=
1
R2
+
1
R3
=
1
2
+
1
2
I =
V
Req
=
5
5
= 1 A

38. Thank
You
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