What is meant by heating effect of electric current ?

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Solution

When an electric current is passed through a conductor , the electrons collide with each other and they will produce heat in the conductor and makes it hot . This effect of electric current is called as the heating effect of electric current .

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Heating effect of electric current is used in___.

Q. (a) What is meant by heating effect of electric current ? Give two applications of heating effect of current.
(b) State the law relating heat dissipated in an electric circuit with the current, potential difference and time.
(c) 50 J of heat is produced each second in a

2 Ω

resistor. Find the potential difference across the resistor.

Q. (a) What is meant by the heating effect of current? State thee factors on which the heat produced in a wire by an electric current depends.
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(c) An electric geyser of resistance 20 Ω takes a current of 5 A. Calculate the heat produced in 2 minutes.
(d) Name the commercial unit of electric energy. How many joules are equal to this unit?

(a) What is meant by the chemical effect of electric current ? Explain with the help of an example.
(b) Name any two applications of the chemical effect of electric current.
(c) What is electrolysis ? Explain why, in the electrolysis of water, 'acidified water' is used.

Q. What is meant by rms (effective) value of alternating current?

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