Assignment Details

Current Electricity

Aal

2938 minutes

Apr 24, 4:02 PM

40.0 marks

MCQ

10 questions

ajay verma

ajay veram MSc physics 20 year experience of teaching . I served as physics faculty in different institutes like dronacharya academy New Delhi mentor Patna, Vidya classes Patna

Class Details

Physics

Enggeneering

Physics

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Question Text

Question 2 :
In the given figure, when the galvanometer shows no deflection, the current flowing through the {tex} 5 \Omega {/tex} resistance will be : <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ISC%20-%20Class%2012/5f7c7b3e46f7292c04edf1a5">

Question 3 :
If a wire is stretched to make it {tex} 0.1 \% {/tex} longer, its resistance will :

Question 4 :
A wire of resistance {tex} { } ^ { \prime } \mathrm { R } ^ { \prime } {/tex} is cut into {tex} ^ { \prime } n ^ { \prime } {/tex} equal parts. These parts are then connected in parallel with each other. The equivalent resistance of the combination is :

Question 5 :
Figure below shows five d.c. sources (cells). Their e.m.f.'s are shown in the figure. <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ISC%20-%20Class%2012/5f7c7b3c8073fe2c5706c520"> E.m.f. of the battery {tex} \mathrm { AB } {/tex} is :

Question 6 :
In a meter bridge experiment the ratio of left gap resistance to right gap resistance is {tex} 2: 3 . {/tex} The balance point from left is :

Question 7 :
The equivalent resistance between points {tex} a {/tex} and {tex} f {/tex} of the network shown in figure is : <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ISC%20-%20Class%2012/5f7c7b3d46f7292c04edf1a2">

Question 8 :
If {tex} R _ { 1 } {/tex} and {tex} R _ { 2 } {/tex} are filament resistances of a {tex} 200 \mathrm { W } {/tex} and a {tex} 100 \mathrm { W } {/tex} bulb respectively, designed to operate on the same voltage, then :

Question 9 :
What resistance should be added in the arm RS of Wheatstone bridge to balance the bridge? <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ISC%20-%20Class%2012/5f7c7b3d8073fe2c5706c524">

Question 10 :
Five resistors are connected as shown in figure. The effective resistance {tex} i {/tex}.e., equivalent resistance between the points A and {tex} B {/tex} is : <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/ISC%20-%20Class%2012/5f7c7b3b8073fe2c5706c51f">

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