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CBSE Class 10 Answered

which bulb is better - 40W or 60W?
Asked by priya009 | 07 Mar, 2009, 10:30: PM
answered-by-expert Expert Answer

Generally,the heat and light both depend on the power of bulb. So the bulb with the 60W ratings generates more heat and light. For domestic purposes usually as the light required is less bulbs with less power are preffered thoug it may vary .

Answered by | 08 Mar, 2009, 10:15: PM

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CBSE 10 - Physics
write ohm's law for electric circuit. Also write the necessary formula for this .
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the resistance of a wire of 0.01 cm radius is 10 ohm.if the resistivity of the material of the wire is 50*10^-8 ohm meter find the length of the wire
Asked by prassanna.j | 03 Sep, 2023, 12:28: PM
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Nichrome wire of length L and radius R has resistance 10 ohm.How would the resistance of the wire change when: only diameter of the wire is doubled?Justify 
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Asked by prassanna.j | 03 Sep, 2023, 12:13: PM
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CBSE 10 - Physics
A given length of a wire is doubled of itself and this process is repeated once again.By what factor does the resistance of the wire changes?
Asked by prassanna.j | 03 Sep, 2023, 12:11: PM
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