Question 1 :
State whether True or False: The bulb glows only when current flows through the circuit.
Question 2 :
Using the 'conduction tester' on an object it was found that the bulb begins to glow. Is the object a conductor or an insulator?
Question 4 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c661f59b460d7261e5ea.PNG' />
In the above figure, state whether the direction of current is correct or not.
Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6fcf59b460d7261e66c.PNG' />
Explain why the bulb would not glow in the arrangement shown in the figure given above.
Question 6 :
State whether True or False: A bulb can light up even when its filament is broken.
Question 8 :
Fill in the blank: Switches, electrical plugs and sockets are made of _________.
Question 9 :
Electric current can pass through a sheet of thermocol. Yes or No ?
Question 10 :
A switch helps us to use electricity as per our requirement. State TRUE or FALSE?
Question 11 :
Fill in the blank: _____ is the negative terminal of electric cell.
Question 12 :
State whether True or False: The electric circuit provides a complete path for electricity to pass between the two terminals of the electric cell.
Question 14 :
State true or false : Electric current can flow through metals.
Question 16 :
When the switch is open there is an air gap between its terminals. State TRUE or FALSE?
Question 17 :
What makes it possible to light our homes, roads, offices, markets and factories even after sunset ?
Question 19 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c700f59b460d7261e670.PNG' />
Would the bulb glow in the circuit shown above?
Question 20 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c65cf59b460d7261e5e4.PNG' />
The above figure shows a bulb connected to a cell in two different ways. Will the bulb glow in both the cases?