Question

In the above diagram some electric apparatus and their sign are given. With the help of this
sign draw a 'close electric circuit' and 'open electric circuit'. And also explain in which circuit
bulb will blow?
Close electric circuit
Open electric circuit​

Answer 1

The diagram circuit 01 (right) is the simplest sort of electrical circuit that can do anything useful e.g. lighting a bulb (symbol ) using a single cell battery (symbol ).

The switch is closed ('on', symbol ) to complete the electrical circuit in which all the components must be connected together with an electrical conductor such as a copper wire.

This is one of the simplest circuit diagrams you can draw - so get used to them asap!

Circuit 01 is a simple closed loop and the current will be the same at any point in the circuit.

Lots more on circuit symbols in the next section and  is just the wire connections!