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For the circuit shown in Figure P224 determine which components are supplying power and which are dissipating power Also determine the amount of power dissipated and supplied

 For the circuit shown in Figure P2.24, determine which components are supplying power and which are dissipating power. Also determine the amount of power dissipated and supplied.

 

 

+     2 V   _

 

Nonideal source

 

Figure P2.28

 

2.29      A GE SoftWhite Longlife lightbulb is rated as follows:

+                PR  = rated power  = 60 W

3 V            POR = rated optical power = 820 lumens (lm) (average)

 

 

=        W

 

_                1 lumen

 

 

  1     680

 

 

 

 

 

Figure P2.24

Operating life = 1,500 h (average)

VR  = rated operating voltage  = 115 V

The resistance of the filament of the bulb, measured with a standard multimeter, is 16.7 Q. When the bulb

 

 

 

 

is connected into a circuit and is operating at the rated values given above, determine

a.    The resistance of the filament.

b.    The efficiency of the bulb.

Jun 19 2020 View more View Less

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