SaraNextGen Study App [2023-24]
Last Updated On [03-11-2023]

The electric resistance of a certain wire of iron is  If its length and radius are both doubled, then

a)

The resistance will be doubled and the specific resistance will be halved

b)

The resistance will be halved and the specific resistance will remain unchanged

c)

The resistance will be halved and the specific resistance will be doubled

d)

The resistance and the specific resistance, will both remain unchanged


Question ID - 151021 :-

The electric resistance of a certain wire of iron is  If its length and radius are both doubled, then

a)

The resistance will be doubled and the specific resistance will be halved

b)

The resistance will be halved and the specific resistance will remain unchanged

c)

The resistance will be halved and the specific resistance will be doubled

d)

The resistance and the specific resistance, will both remain unchanged

1 Answer
5876 Votes
3537

Answer Key : (b) -

(b)

 specific resistance doesn’t depend upon length, and radius



Next Question :

Two diodes have resistance 20  and is centretapped with rms secondary voltage from centre tap to each end of secondary 50 V. If external resistance is 980  What is mean load?

a)

0.05 A

b)

45 mA

c)

0.25 A

d)

25 mA


View Topper Answer

We hope we have given the updated helpful answer / content for your query in an easily accessible format to help you in preparing adequately. We do offer free support materials, 11th maths guide 11th maths guide 12th maths guide 10th maths guide, also for all the classes books and guide to all the students who sign up for SaraNextGen. Apart from traditional textbook queries, we've got conjointly provided further high order level thinking issues, that are seemingly to be expected in boards and competitive exams. It includes conceptual queries, MCQs, Long and short answer type queries, etc. These Questions are designed to learn each student and academics by providing chapter-wise further issues focusing totally on testing conceptual information with applications. Here, we've got provided a number of the necessary ways in which within which the solutions of all the Questions will profit students of class 1 to 12. If you have any queries, drop a message to us and we will get back to you at the earliest.


SaraNextGen