A circuit with a (fused/filament) bulb acts as an incomplete circuit.
Important Questions on Electricity and Circuits
The diagram below shows a dual control switch circuit connected to a bulb. Copy the diagram and complete it so that the bulb is switched ON.
You switch on an electric torch, but the bulb does not glow. Become a detective and solve the mystery! Answer these questions in your notebook.
List three possible reasons why the bulb does not glow.
What is being used as a switch here?
Study the picture and answer the questions.
Draw arrows in the picture to show the direction in which electric current will flow when the circuit is complete.
Electric switch.
Study the picture and answer the questions.
Using your pencil or pen, complete the circuit in the diagram so that the circuit is closed.
Complete the drawing shown in figure to indicate where the free ends of the two wires should be joined to make the bulb glow.
Would the bulb glow in the following circuits. Give reason for your answer.
Fig (a)
Fig (b)
Fig (c)
