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Asked by Sabu

Jun 24, 2014

An electric bulb is rated 220V and 100W. when it is operated on 110V, what will be the power consumed?

 

Answer.


    P = V2/R  
If V = 220 V we have

100 W = 2202

Answer (2)

Asked by Sudharsan s

May 7, 2015

What is the difference between resistance and resistivity of a conducter? Please Explain?

Answer.
  1.  Resistance of a conductor is the obstruction offered by the conductor in the flow of current throu...

Answer (4)

Asked by Prateek Jain

Jul 9, 2015

I want all the formulas used in chapter electricity

The formulas used in class X are-
1- I,current=Q,charge/T,time
2- V,potential differnce=W,work done/Q,charge
3-V,potential difference=I,cureent*R,resistance
4-Resisitivity=(R,resista...

Answer (2)

Asked by Adhavan M

Jul 22, 2014

calculate the number of electron constituting 1 coulomb of charge

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Answer (2)

Asked by Letusknowwhy

Apr 22, 2014

State Joule’s law of heating. Mention SI unit Heat energy.

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Answer (4)

Asked by Inu

Jul 20, 2013

hat are the factors on which the resistance of a conductor depends? what happens to the resistivity of a conductor when its length is doubled?

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Answer (11)

Asked by R murali

Jun 6, 2014


  1. What is the resistance of an ideal voltmeter and ammeter ? how are they connected in a circuit?


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Answer (2)

Asked by Vanshika madan

Jul 11, 2015

Why an ammeter is connected in series while a voltmeter is in parallel?

 (i) The internal resistance of the ammeter is very low.If we connect it in&...

Answer (4)

Asked by Inu

Aug 3, 2013

draw a schematic diagram of circuit consisting of a battery of five 2 V cells, a 5 ohm resistor, a 10 ohm resistor and a 15 ohm resistor , and a plug key, all are connected in series.Calculate the electric current passing through the above above circuit when the key is closed.

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Answer (2)

Asked by Anithasoundar Soundar

Jun 11, 2014

a 100 electric bulb is lighted for 2 hrs daily and four 40w bulbs are lighted for 4 hrs daily .calculate the energy consumed(in Kwh)in 30 day

Answer:

Answer (4)

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