Subject Experts Solutions for Chapter: Electric Current and Its Effects, Exercise 3: HOTS AND VALUE BASED QUESTIONS

What source of electricity would you select to supply power for artificial satellites.

Explain series connection with the help of a neatly labelled circuit diagram.

Explain parallel connection with the help of a neatly labelled circuit diagram.

Can you use a copper wire to make the filament of an electric bulb. Justify?

Why does an open electric circuit not make any appliance work? 

Which materials produce heat energy when current is passed through them and why? 

Ram and Neeraj are alone at home. Ram is watching TV while Neeraj is playing with his toy. The battery in his toy gets discharged. He decides to change it and connects the plug to the same socket to which the TV is connected. The table fan in their room is also connected to that socket. Suddenly, after a few seconds, Ram sees a heavy spark near the socket. He immediately puts off the main switch and calls his neighbours for help. What do you think is the reason for heavy spark in the socket?

Ram and Neeraj are alone at home. Ram is watching TV while Neeraj is playing with his toy. The battery in his toy gets discharged. He decides to change it and connects the plug to the same socket to which the TV is connected. The table fan in their room is also connected to that socket. Suddenly, after a few seconds, Ram sees a heavy spark near the socket. He immediately puts off the main switch and calls his neighbours for help.

(b) What do you learn from Ram’s behavior?