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Electricity And Its Effect - Class 10 MCQ


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5 Questions MCQ Test - Electricity And Its Effect

Electricity And Its Effect for Class 10 2024 is part of Class 10 preparation. The Electricity And Its Effect questions and answers have been prepared according to the Class 10 exam syllabus.The Electricity And Its Effect MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Electricity And Its Effect below.
Solutions of Electricity And Its Effect questions in English are available as part of our course for Class 10 & Electricity And Its Effect solutions in Hindi for Class 10 course. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free. Attempt Electricity And Its Effect | 5 questions in 10 minutes | Mock test for Class 10 preparation | Free important questions MCQ to study for Class 10 Exam | Download free PDF with solutions
Electricity And Its Effect - Question 1
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A metallic conductor is loosely bound electrons called free electrons the metallic conductor is :-

Detailed Solution for Electricity And Its Effect - Question 1

METALS TENDS TO LOOSE ELECTRONS HENCE THEY ARE POSITIVELY CHARGED

Electricity And Its Effect - Question 2
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Which of the following expression does not represent the electric power in circuit.

Detailed Solution for Electricity And Its Effect - Question 2

We know that V = IR  

Now Power (P) = Work done (W)/Time (T)

=》 P = VQ/T = VI

Now putting V=IR one by one

We will get P = VI = I2R = V2/R

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Electricity And Its Effect - Question 3
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A wire of resistance R is cut into 5 equal pieces. These pieces are connected in parallel and equivalent resistance of combination R'. Then the ratio R/R' is :- 

Detailed Solution for Electricity And Its Effect - Question 3

A wire of resistance R1 is cut into 5 equal pieces. These pieces are connected in parallel and equivalent resistance of combination R2.

Then the ratio R/R' is :- 

Electricity And Its Effect - Question 4
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The resistance of the conductor is R. If its length is doubled, then its new resistance will be :-
Detailed Solution for Electricity And Its Effect - Question 4

Resistance= Resistivity x length/area

When the wire is stretched to double the length , the area of cross section gets reduced to half.

So

New Resistance = Resistivity x 2length/area/2

I.e,

New resistance = (Resistivity x length/area)x4

i.e, New resistance = Resistance x 4

Electricity And Its Effect - Question 5
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Which of the following is the best option while considering the safety of household electric appliances?
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