One Kg of copper is drawn into a wire of...

One Kg of copper is drawn into a wire of 1mm diameter and a wire of 2mm diameter. The resistance of the two wires will be in the ratio

`2: 1`

`1 : 2`

`16 : 1`

`4 : 1`

Text Solution

Verified by Experts

Topper's Solved these Questions

QUESTION PAPER 2008
WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|38 Videos
QUESTION PAPER 2010
WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A lump of copper is stretched into a wire 5mn in diameter. Another wire of 1 cm diameter is made from another lump of copper of the same mass. Find the ratio of the resistances of the two wires.

A copper sphere of radius 3 cm is beaten and drawn into a wire of diameter 0.2 cm. The length of the wire is____

The lengths radii and specific resistance of two conducting wires are each in the ratio of 1:3. If the resistance of the thinner wire is 10 Omega then the resistance of the other wire will be

Two wires are having length , resistivity and their radius in the ratio of 1:3 . Resistance of the thinner wire is 10 Omega , then the resistance of the other wire will be

Keeping the temperature and diameter constant the length of a wire is made thrice. What change in the resistance of the wire will be seen ?

A wire of resistance 32 Omega is melted and drawn into a wire of half of its original length.Calculate the resistance of the new wire.What is the percentage change in resistance?

IF the length of a copper wire is increased by 0.1%, show that the resistance of the copper wire will increase by 0.2%.

A wire of radius 5 mm is produced from a lump of copper. Another wire of the same mass but of diameter 1 cm is produced from another lump of copper. Determine the ratio of the resistances of the two wires.

The length of a wire is 10 m and the diameter is 2 mm . If the resistivity of substance of the wire is 2 xx 10^(-6) ohm . Then the resistance of the wire is

A thin wire of resistance 4Omega is bent to form a circle. The resistance across any diameter is

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2009-Multiple Choice Questions (Physics)

Two identical light waves, propagating in the same direction, have a p...
Text Solution
|
The equation of state for n moles of an ideal gas is PV= nRT, where R ...
Text Solution
|
At a certain place, the horizontal component of earth's magnetic field...
Text Solution
|
The number of electrons in 2coulomb of charge is
Text Solution
|
The current flowing through a wire depends on time as I= 3t^(2)+ 2t + ...
Text Solution
|
If the charge on a capacitor is increased by 2 coulomb, the energy sto...
Text Solution
|
Work done to carry a charge q once along the circular path of radius r...
Text Solution
|
Four capacitors of equal capacitance have an equivalent capacitance C(...
Text Solution
|
Magnetic field intensity H at the centre of a circular loop of radius ...
Text Solution
|
Which of the following materials is the best conductor of electricity?
Text Solution
|
One Kg of copper is drawn into a wire of 1mm diameter and a wire of 2m...
Text Solution
|
An electrical cable having a resistance of 0.2Omega delivers 10kw at 2...
Text Solution
|
A wire of resistance 5Omega is drawn out so that its new length is 3 t...
Text Solution
|
Two identical cells each of emf E and internal resistance r are connec...
Text Solution
|
To write the decimal number 37 in binary, how many binary digits are r...
Text Solution
|
A junction diode has a resistance of 25Omega when forward biased and 2...
Text Solution
|
If the electron in a hydrogen atom jumps from an orbit with level n(1)...
Text Solution
|
What is the particle x in the following nuclear reaction: ""(4)^(9)Be ...
Text Solution
|
An alternating current of rms value 10A is passed through a 12Omega re...
Text Solution
|
Which of the following relation represent Biot-Savart's law?
Text Solution
|