A metallic resistor is connected across a battery. If the number of collisions of the free electrons with the lattice is somehow decreased in the resistor (for example, by cooling it), the current will:

Two resistors \(A\) and \(B\) have resistances \(R_A\) and \(R_B\) respectively with \(R_A < R_B .\) The resistivities of their materials are \(\rho_A\) and \(\rho_B\) is:

The product of resistivity and conductivity of a cylindrical conductor depends on:
1. temperature
2. material
3. area of cross-section
4. none of these.

As the temperature of a metallic resistor is increased, the product of its resistivity and conductivity:
1. increases
2. decreases
3. remains constant
4. may increase or decrease

In an electric circuit containing a battery, the charge (assumed positive) inside the battery:

A resistor of resistance \(R\) is connected to an ideal battery. If the value of \(R\) is decreased, the power dissipated in the resistor will:

A current passes through a resistor. Let K₁ and K₂ represent the average kinetic energy of the conduction electrons and the metal ions respectively.

1.   K₁ < K₂

2.   K₁ = K₂

3.   K₁ > K₂

4.   Any of these three may occur

Two resistors \(R\) and \(2R\) are connected in series in an electric circuit. The thermal energy developed in \(R\) and \(2R\) are in the ratio of:
1. \(1:2\)
2. \(2:1\)
3. \(1:4\)
4. \(4:1\)

Two resistances \(R\) and \(2R\) are connected in parallel in an electric circuit. The thermal energy developed in \(R\) and \(2R\) are in the ratio:
1. \(1 : 2\)
2. \(2 : 1\)
3. \(  1 : 4\)
4. \(4 : 1\)

A uniform wire of resistance \(50~\Omega\) \(\) is cut into \(5\) equal parts. These parts are now connected in parallel. The equivalent resistance of the combination is: