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Question : 4
Total: 5
(a) What is the heating effect of electric current?
(b) Write an expression for the amount of heat produced in a resistor when an electric current is passed through it stating the meanings of the symbols used.
(c) Name two appliances based on heating effect of electric currents.
(b) Write an expression for the amount of heat produced in a resistor when an electric current is passed through it stating the meanings of the symbols used.
(c) Name two appliances based on heating effect of electric currents.
Solution:
(a) Whenever a current flows through a conductor, it gets heated up due to the resistance offered by it to the flow of electrons. This is called heating effect of current.
(b)H = I 2 R t H = I = R = t =
(c) Electric iron and electric geyser are the two appliances based on heating effect of electric current.
(b)
(c) Electric iron and electric geyser are the two appliances based on heating effect of electric current.
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