Two identical slabs of given metal are joined together in two different ways as shown in figure. What is the ratio of the resistance of these two combinations?
Text Solution
Verified by Experts
Let `l` and A be the length and area of cross-section of the each of the two slabs. Then `R= rho l//A` `R_(1) = (rho 2l)/A = 2R` `R_(2) = (rho l)/(2A)= R/2` `R_(1)/R_(2)=(2R)/(R//2) = 4 or R_(1) : R_(2)=4:1`
Topper's Solved these Questions
CURRENT ELECTRICITY
PRADEEP|Exercise Conceptual Problems|3 Videos
CURRENT ELECTRICITY
PRADEEP|Exercise Very short Q/A|7 Videos
COMMUNICATION SYSTEMS
PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos
DUAL NATURE OF RADIATION AND MATTER
PRADEEP|Exercise Exercise|191 Videos
Similar Questions
Explore conceptually related problems
Two glucose molecules are joined together by
Two similar planoconvex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths in three cases will be
In the given figure what is the equivalent resistance between two points A and B ?
Two vibrating modes of an air column are shown in figure. What is the ratio of frequency of two notes ?
In the given figure what is the equivalent resistance between two points A and B?
Find the area of the pentagonal park shown in Figure in two different ways:
Prahar took two identical heating elements and con-nected them to a battery in two different ways as shown in the figure. When he switched ON the switch, is the heat developed in each element the same or different in both the cases ?
In a system of two dipoles placed in the way as shown in figure :
PRADEEP-CURRENT ELECTRICITY-Problems for Practice (B)
