Two wire of the same meta have same leng...

Two wire of the same meta have same length, but their cross-sections are in the rati `3:1` . They are joined in series. The resistance of thicker wire is `10Omega` . The total resistance of the combination will be

Text Solution

Verified by Experts

The correct Answer is:

`40Omega`

Topper's Solved these Questions

CIRCULAR MOTION
ALLEN|Exercise EXERCISE (J-A)|6 Videos
GEOMETRICAL OPTICS
ALLEN|Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Two wires of the same metal have same length, but their cross-sections are in the ratio 3:1 . They are joined in series. The resistance of thicker wire is 10 Omega . The total resistance of the combination will be

Two wires of same metal have the same length but their cross- sections are in the ratio 1 :3 . They are joined in series. The resistance of the thicker wire is 10 Omega . The total resistance of the combination will be

Two wires of the same metal have the same length, but their cross-sections are in the ratio of 3:1 . They are joined in series. The resistance of the thicker wire is 10 Omega . The total resistance of the combinations will be

Two wires A and B of the same material have their lengths in the ratio 1 : 5 and diameters in the ratio 3 : 2 . If the resistance of the wire B is 180 Omega , find the resistance of the wire A.

Two wires of same material and length have the radii of their cross sections as r and 2r, respectively. The ratio of their resistances

Two different wires have specific resistivities, lengths,a re of cross-sections are in the ratio 3:4, 2:9 and 8:27 then the ratio of resistance of two wires is

Two wires A and B of the same material have their lengths in the ratio 5: 3 and diameter in the radius 2:3 . If the resistance of wire A is 15 Omega . find the resistance of wire B

ALLEN-CURRENT ELECTRICITY-All Questions

In the following figure what is the resultant resistance between A and...
Text Solution
|
Figure represents a part of closed circuit. What is the potential diff...
Text Solution
|
Two wire of the same meta have same length, but their cross-sections a...
Text Solution
|
If a copper wire is stretched to make its radius decrease by 0.1%, the...
Text Solution
|
What is the smallest that can be obtained by ten (1)/(10)Omega resist...
Text Solution
|
A battery of emf 2.0 V and internal resistance 0.10 Omega is being cha...
Text Solution
|
A battery of six cells each of e.m.f. 2V and internal resistance 0.5Om...
Text Solution
|
A battery of six cells each of e.m.f . 2V and internal resistance 0.5O...
Text Solution
|
Four identical cells each of emf 2V, are joined in parallel providing ...
Text Solution
|
The e.m.f. of a primary cell is 2V, when it is shorted then it gives ...
Text Solution
|
The n rows each containinig m cells in series are joined parallel. Max...
Text Solution
|
The e.m.f. of a cell is 6 volt. When 2 ampere current is drawn from it...
Text Solution
|
A battery of emf 2.0 V and internal resistance 0.10 Omega is being cha...
Text Solution
|
Two batteries of e.m.f. E(1) and E(2) and internal resistance r(1) and...
Text Solution
|
Two cells of equal e.m.f. E b ut of difference internal resistance r(1...
Text Solution
|
To get a maximum current in an external resistance of 8Omega one can u...
Text Solution
|
Four idential cells each having e.m.f. E, internal resistance r are co...
Text Solution
|
A battery of 10 cells each of e.m.f. E=1.5V and internal resistance 0....
Text Solution
|
A battery of 20 cells (each having e.m.f. 1.8V and internal resistance...
Text Solution
|
For a cell, the graph between the potential difference (V) across the ...
Text Solution
|