If a wire of uniform cross sectional are...

If a wire of uniform cross sectional area is cut equally into two parts the resistivity part

is halved

is doubled

remains same

none of the above

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

CURRENT ELECTRICITY
BINA LIBRARY|Exercise EXERCISE|107 Videos
COMMUNICATION SYSTEM
BINA LIBRARY|Exercise EXERCISE |64 Videos
DUAL NATURE OF MATTER AND RADIATION
BINA LIBRARY|Exercise EXERCISE|68 Videos

Similar Questions

Explore conceptually related problems

When a force is applied on a wire of uniform cross-sectional area 3×10 −6 m 2 and length 4m, the increase in length is 1 mm. Energy stored in it will be (Y=2×10 11 N/m 2 )

If the length of a wire is doubled and cross-sectional area is halved, what happens to the resistance?

The breaking stress for a wire of unit cross - sectional is called its

Two ends of a conducting wire of non-uniform cross-section are connected to a battery. Explain why the electric field at the thinner section is different from the electric field at the thicker section.

A wire of given material having length I and area of cross-section A has a resistance of 8Omega . What would be the resistance of another wire of the same material having length l/2 and area of cross-section 4A?

Water is flowing steadily through a horizontal pipe of non- uniform cross-section. The pressure of water is 4xx10^4 at a point, where cross-section is 0.02m^2 and velocity of flow is 2ms^-1 . What is the pressure at a point, where cross-section reduces to 0.01m^2 ?

A stream of water flowing horizontally with a speed of 15 m s^1 gushes out of a tube of cross-sectional area 10^2 m2, and hits a vertical wall nearby. What is the force exerted on the wall by the impact of water, assuming it does not rebound?

A wire length L and cross sectional area A is made of material of Young's modulus Y . It is strectched by an amount X . The work done is

BINA LIBRARY-CURRENT ELECTRICITY-EXERCISE

How many different combinations of three equal resistors can be made ?
Text Solution
|
A steady current flows in a metallic conductor of non uniform cross-se...
Text Solution
|
A metallic wire of resistance 40 Omega is stretched to twice its lengt...
Text Solution
|
A metallic wire is drawn to reduce its diameter to half its original v...
Text Solution
|
Three resistances each of 4 Omega are connected to form a triangle. Th...
Text Solution
|
Four wires of equal length and of resistance 10 Omega each are connect...
Text Solution
|
Assuming that the charge of an electron is 1.6 x 10^-19 C. The number ...
Text Solution
|
The electrical resistance of metals
Text Solution
|
The resistance of a conductor is 5 Omega at 50°C and 6 Omega at 100°C...
Text Solution
|
A piece of copper and another of germanium are cooled from room temera...
Text Solution
|
What is the order of the drift velocity of electrons?
Text Solution
|
A wire of 4 Omega resistance is bent at 180° at its mid point and twis...
Text Solution
|
A and B are two wires of copper of equal cross-section and A is longer...
Text Solution
|
If a wire of uniform cross sectional area is cut equally into two part...
Text Solution
|
Ampere second is the unit of
Text Solution
|
The temperature co-efficient of resistance of a wire is 0.00125 °C^-1....
Text Solution
|
Krichhoff's first law deals with conservation of
Text Solution
|
The instrument for accurate measurement of emf of a cell is
Text Solution
|
In a metre bridge, the balancing length from the left end is 20 cm. Th...
Text Solution
|
The sensitivity of a potentiometer can be increased by
Text Solution
|