EASY
10th CBSE
IMPORTANT
Earn 100

Name two effects produced by electric current.

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Which effect of current is utilised in an electric light bulb?
EASY
10th CBSE
IMPORTANT
Which effect of current is utilised in the working of an electric fuse?
EASY
10th CBSE
IMPORTANT
Name two devices which work on the heating effect of electric current.
EASY
10th CBSE
IMPORTANT
Name two gases which are filled in filament type electric light bulbs.
EASY
10th CBSE
IMPORTANT
Explain why, filament type electric bulbs are not power efficient.
EASY
10th CBSE
IMPORTANT
Why does the connecting cord of an electric heater not glow hot while the heating element does?
EASY
10th CBSE
IMPORTANT
(a) Write down the formula for the heat produced when a current I is passed through a resistor R for time t.
(b) An electric iron of resistance 20 ohms draws a current of  5 amperes. Calculate the heat produced in 30 seconds.
EASY
10th CBSE
IMPORTANT
State three factors on which the heat produced by an electric current depends. How does it depend on these factors?