Electrometer as a Wattmeter and Voltmeter. 



3 155 



Date of 

 experiment, 

 189 7. 



tP H £X ~OS £l> £ OS 



i— 1 rH rH rH 

 U t* 



O ° 



P Q 



Watts per division of 

 scale. 



Griven by 

 curves. 



ION VO05 ^ *5 

 <>J CO t> GO tP r-i GO 



lOfflifl * CD CO I I t- CO 

 riHH H H HH 



• 



From product 

 of volts and 

 amperes. 



U0 WON r-i O rH 



n cs tp m <m co os 



I CO * O H CO !r<H CO I 

 rH rH rH rH rH rH rH 



Watts. 



Gfiven by 

 curves. 



990 99 99 



NNW . .N» » . OH 

 TPOSC0..COCO.. >OtP 



h an «-h go mn 



CO w M X> CN «)IM 



From product 

 of volts and 

 amperes.- 



9 9 9 9 99 9 



• CM .OOO .OO „ 

 . tP . CO C<J <M . Q OS t*« . 

 00 CO CO O TP CO <M 

 CO Tp <M t> tP CM tO 



Current in 

 amperes 



a 

 <* 



<o 



S 

 ^> 



CO CO COlflCOHOiO 

 XXCOCOCMOOCOCO OO 



HOONHCDiONH KJ 10 

 r- H H r-i Tp -p 



Potential of 

 needle C in 



oS 



\ 

 s 



OOOOOOOOO (N CO 



CO O CO O O X CO O O 

 iOCO<MCOCCCOCOtPtP HH 

 OCOCOXXtjitPXX HH 

 H H HH 



Phase difference 



in degrees. 

 360° = 1 period. 



00^0000000 OO 



OO^OOOtPOO 50 

 CO CO CO CO 



Fre- 

 quency. 



OWOOOONOO Tp^fi 



coeocoioiococococo 00 O 

 co x go i> *> m t Tp w in m 



2 d 2 



