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Jun 24, 2014

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



P = V2/R
If V = 220 V we have

100 W = 2202

May 7, 2015

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



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

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...

Jul 22, 2014



Apr 22, 2014



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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&...

Aug 3, 2013