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प्रश्न
Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
How can you change the brightness of the lamp?
उत्तर
The brightness of the lamp can be changed by connecting the lamps in parallel.
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संबंधित प्रश्न
The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?
What is an electric current?
State the factors on which the strength of electric current flowing in a given conductor depends.
The p.d. across a 3 Ω resistor is 6 V. The current flowing in the resistor will be:
(a) `1/2A`
(b) 1 A
(c) 2 A
(d) 6 A
Tell the odd one out. Give a proper explanation.
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
True or False – If False give the correct answer
The representation of the electric current is A
When an electric current is passed, electrons move from:
