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Current Electricity MCQ Level - 1 - Physics MCQ


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10 Questions MCQ Test - Current Electricity MCQ Level - 1

Current Electricity MCQ Level - 1 for Physics 2024 is part of Physics preparation. The Current Electricity MCQ Level - 1 questions and answers have been prepared according to the Physics exam syllabus.The Current Electricity MCQ Level - 1 MCQs are made for Physics 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Current Electricity MCQ Level - 1 below.
Solutions of Current Electricity MCQ Level - 1 questions in English are available as part of our course for Physics & Current Electricity MCQ Level - 1 solutions in Hindi for Physics course. Download more important topics, notes, lectures and mock test series for Physics Exam by signing up for free. Attempt Current Electricity MCQ Level - 1 | 10 questions in 30 minutes | Mock test for Physics preparation | Free important questions MCQ to study for Physics Exam | Download free PDF with solutions
Current Electricity MCQ Level - 1 - Question 1
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A wire is stretched to n times its length. Then the resistance now will increase by :

Detailed Solution for Current Electricity MCQ Level - 1 - Question 1

M = constant

The correct answer is: n2 times

Current Electricity MCQ Level - 1 - Question 2
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A cell has an emf 1.5 V when connected across in an external resistance of 2Ω the terminal potential difference falls to 1.0 V. The internal resistance of the cell is :

Detailed Solution for Current Electricity MCQ Level - 1 - Question 2

Internal resistance of the cell is given by 

The correct answer is: 1.0Ω

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Current Electricity MCQ Level - 1 - Question 3
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n equal cell having e.m.f. E and internal resistance  r, are connected in circuit of a resistance  R. Same current flows in circuit either they connected in series or parallel, if :

Detailed Solution for Current Electricity MCQ Level - 1 - Question 3

Current when cells are connected in series




The correct answer is: R = r

Current Electricity MCQ Level - 1 - Question 4
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The potential difference between point A  and B  is :
Current Electricity MCQ Level - 1 - Question 5
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A wire is bent in the form of a triangle now the equivalent resistance between its one end and the mid point of the side is :
Detailed Solution for Current Electricity MCQ Level - 1 - Question 5

Resistance R, R  and R/2 are in series. Their resultant resistance.


Resistance R'  and R/2 are in series. Their resultant resistance

Current Electricity MCQ Level - 1 - Question 6
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There is a voltmeter in a circuit. In order to triple its range, the resistance of how much value should be used?
Detailed Solution for Current Electricity MCQ Level - 1 - Question 6

If R  is the resistance of the voltmeter and I  current is flowing through it, then


The correct answer is: 2R

Current Electricity MCQ Level - 1 - Question 7
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Nine resistors each of resistance R  are connected in the circuit as shown in figure. The net resistance between A  and B is
Detailed Solution for Current Electricity MCQ Level - 1 - Question 7



The correct answer is: 2R/9

Current Electricity MCQ Level - 1 - Question 8
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The resistance of an ammeter is 13Ω and its scale is graduated for a current upto 100 A. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 A  by this meter. The value of shunt resistance is :
Detailed Solution for Current Electricity MCQ Level - 1 - Question 8

The potential differences across ammeter and shunt is same. Let  ia is the current flowing through ammeter and i is the total current. So, a current  i - ia  will flow through. shunt resistance.


The correct answer is: 2Ω

Current Electricity MCQ Level - 1 - Question 9
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The value of i1/i2 for a given diagram is :
Current Electricity MCQ Level - 1 - Question 10
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When a wire of uniform cross-section a length ℓ and resistance R is bent into a complete circle, resistance between two of diametrically opposite points will be :
Detailed Solution for Current Electricity MCQ Level - 1 - Question 10

When wire is bent to form a complete circle then


Resistance of each semicircle 

Thus, net resistance is parallel combination of two semicircular resistances

The correct answer is: R/4

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