NEST (National Entrance Screening Test) Physics: Questions 58 - 58 of 58

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Question number: 58

» Current Electricity » Potential Difference and EMF of Cell


Appeared in Year: 2019

Essay Question▾

Describe in Detail

Drawing power from a car battery, a stabilized Dc voltage is required to power a car stereo system attached to the terminals and , as shown in the figure.

Image shows The power of car stereo system

Image Shows the Power of Car Stereo System

Image shows The power of car stereo system

In a Zener diode with rating and , is connected as shown in the figure, for the above purpose, the minimum series resistance must be


From Kirchhoff’s loop rule

For to be minimum, I should be maximum:

At node point :

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