Q. 7

# A servo voltage s

Given,

Output voltage, V = 220 V ± 1%

= 220 V ± 2.2 V

The resistance of a bulb that is operated at voltage V and consumes power P is given by Joule’s heating effect-

Putting the values in the above formula, we get

(a) We know that for minimum power to be consumed, output voltage should be minimum.

The minimum output voltage will be,

The current through the bulb,

Where

V is the voltage across the bulb

R is the resistance of the bulb

Putting the values in the above formula, we get

=0.45 A

Now, the power consumed by the bulb,

(b) For maximum power to be consumed, output voltage should be maximum.

The maximum output voltage,

The current through the bulb,

Power consumed by the bulb in this case is,

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses
RELATED QUESTIONS :

An electric bulb HC Verma - Concepts of Physics Part 2

A servo voltage sHC Verma - Concepts of Physics Part 2

Figure shows an eHC Verma - Concepts of Physics Part 2

Find the charge rHC Verma - Concepts of Physics Part 2

Find the thermo-eHC Verma - Concepts of Physics Part 2

The 2.0 Ω resistoHC Verma - Concepts of Physics Part 2

An immersion heatHC Verma - Concepts of Physics Part 2

An electric bulb,HC Verma - Concepts of Physics Part 2

A coil of resistaHC Verma - Concepts of Physics Part 2

When a current paHC Verma - Concepts of Physics Part 2