The resistance of a 1m long nichrome wir...

The resistance of a 1m long nichrome wire is `6 Omega`. If we reduce the length of the wire to 70 cm, what will its resistance be?

Topper's Solved these Questions

CURRENT ELECTRICITY
CHETANA PUBLICATION|Exercise EXERCISE|44 Videos
LAWS OF MOTION
CHETANA PUBLICATION|Exercise EXAMPLE|119 Videos

Similar Questions

Explore conceptually related problems

The resistance of a copper wire is 20 Omega at 0^@C . Find the resistance at 60^@C if the temperature coefficient of resistance of material is 0.004//^@C .

The resistance of a potentiometer wire is 10 Omega and its length is 10 meter. A resistance box and 2 V accumulator are placed in series with it. What should be the value of resistance in the box if it is desired to have potential drop of 1muV /mm?

The resistance of a potentiometer wire is 8 Omega and its length is 8 m. A resistance box and a 2V battery are connected in series with it. What should be the resistance in the box, if it is desired to have a potential drop of 1muV//mm ?.

The resistance of a wire of length 31.4 m and diameter 1 mm is 20 Omega . Find the resistivity of the material of the wire.

The e.m.f. of a cell is balanced by fall of potential along 281 cm of potentiometer wire. If a resistance of 8 Omega is connected across the cell , the balancing length is found to be 151 cm. Calculate internal resistance of a cell.

The potential gradient along the length of uniform wire is 10" Vm"^(-1) . The length of the wire is 1 m. What is the potential difference across two points on the wire separated by 25 cm?

The resistance of a wire of length 15.7 m and radius 0.5 mm is 10 Omega . Find the resistivity of the material of the wire.

Choose correct alternative. A wire of length 20 cm has resistance 5 Omega . It is stretched up to 60 cm, its resistance will be

A wire of resistance 100 Omega is uniformly stretched until its length increases by 5% . What will be its resistance after stretching? Assume that the volume of the wire remains the same when it is stretched.

CHETANA PUBLICATION-CURRENT ELECTRICITY-EXERCISE

The resistance of a 1m long nichrome wire is 6 Omega. If we reduce the...
Text Solution
|
Fill in the blanks: 1mA=………..A.
Text Solution
|
Fill in the blanks: To increase the effective resistance in a circuit...
Text Solution
|
1 kilowatt hr = …… joules.
Text Solution
|
The voltage difference in India between the live and neutral wiresis a...
Text Solution
|
Resistivity is the specific property of a………. .
Text Solution
|
If a P.D. of 12 V is applied across a 3 omega resistor then the curren...
Text Solution
|
In order to measure the electric current flowing through a circuit, we...
Text Solution
|
P and Q are two wires of same length and different cross sectional are...
Text Solution
|
Following is true for identical bulbs connected in parallel.
Text Solution
|
The……..wire is either yellow or green in colour.
Text Solution
|
A current flows through a circuit due to the differnce in ………….between...
Text Solution
|
……is the amount of charge flowing throught a particular cross section...
Text Solution
|
The flow of…...constitutes the eletric current in a wire
Text Solution
|
The conventional direction of flow of current is from……..terminal to …...
Text Solution
|
Resistances are connected in …..so as to pass the same current throu...
Text Solution
|
To decrease the effective resistance in a circuit, the resistances are...
Text Solution
|
1 muV =….V
Text Solution
|
Good conductors contain a large number of …………………
Text Solution
|
Electrons flow ………terminal to ………terminal in a conductor when potentia...
Text Solution
|
Sneha is getting an electrical shock what will you do the save her lif...
Text Solution
|