List of top Science and Technology Questions on Effects of Electric Current

The resistance of the wire is 100 Ω. If it is carrying a current of 1 A for 10 seconds, the heat produced will be _ _ _ _ _ _ .
Which principle do we learn from this process?
How will you state the principle briefly?
For electric power transmission, copper or aluminium wire is used.
Find the odd one out:
Loudspeaker, microphone, electric motor, magnet.
.................... is used to make a solenoid type coil in an electric bulb.

विजेच्या बल्बमध्ये वळवळ वनस्पतीसाठी टंगस्टन धातूचा उपयोग करतात.

How much time will the satellite take to complete one revolution around the Earth? (Radius of Earth = 6400 km.)

Observe the following graph and answer the following questions:

What does the graph represent?

Give scientific reasons (any two):
When the gas formed on heating limestone is passed through freshly prepared lime water, the lime water turns milky.