List of top Physics Questions on Resistance asked in COMEDK UGET

The voltage-current graph for a metal wire of uniform area of cross section at two different temperatures $T$ and $T'$ is shown. Then choose the correct statement:
The resistance of a heating element is found to be \(120\Omega\) at room temperature which is \(20^\circ C\). If the temperature coefficient of the material of the resistor is \(1.6 \times 10^{-4}\,^\circ C^{-1}\) and the resistance is found to be \(160\Omega\), the temperature of the element is:
The net resistance between the points A and B in the circuit given below is:

The power dissipated across the \(16\Omega\) resistor in the circuit is \(2\) watts. The power dissipated in watt units across the \(4\Omega\) resistor is:

The resistance of the conductor is \( \sqrt{3}\Omega \) the angle made by the V-I graph with the voltage axis is \( \theta \)
The resistance of a 10 m long wire is 10 $ \Omega $. Its length is increased by 25\% by stretching the wire uniformly. The new resistance is
A voltmeter of resistance $1000 \, \Omega $ and $0.5 \, \text{V/div} $ is to be converted into a voltmeter to make it read $1 \, \text{V/div} $. The value of high resistance to be connected in series with it is
A galvanometer having a resistance of $ 8 \, \Omega $ is shunted by a wire of resistance $ 2 \, \Omega $. If the total current is 1 A, the part of it passing through the shunt will be
Two cells with the same emf $ E $ and different internal resistances $ r_1 $ and $ r_2 $ are connected in series to an external resistance $ R $. If the potential difference across the first cell is zero then the value of $ R $ is
The resistance of a wire is \( R \) ohm. If it is melted and stretched to \( n \) times its original length, its new resistance will be
Two resistances $A$ and $B$ have colour codes orange, blue, white and brown, red, green respectively. Then ratio of their resistances $A : B$ is
Specific resistance of a conductor material increases with
An ammeter reads 0 to 10 A. It has negligible resistance.To convert this into voltmeter to read upto 250 V, resistance to be used is