Electric Circuits

The resistance halves.

The resistance quadruples.

The resistance doubles.

The resistance remains unchanged.

Compare resistivity at room temperature to that at boiling point without controlling environmental conditions or accounting for possible impurities in the material.

Observe changes in current with varying temperatures while keeping voltage constant, disregarding semiconductor properties like band gap energy.

Measure resistivity at various temperatures, ensuring constant dimensions and contact resistance, while considering error from thermal expansion and voltmeter sensitivity.

Record resistance changes under different light intensities, assuming that temperature remains constant without actual temperature measurements.

Electron mobility is lower in the material with higher resistivity.

Electron mobility cannot be compared without knowing specific temperatures for each material.

Both materials have equal electron mobility since wires are identical physically.

Electron mobility is higher in the material with higher resistivity.

It halves.

It remains unchanged.

It doubles.

It quadruples.

The filament has a short length and a small cross-sectional area

The filament has long length and a narrow cross-sectional area

It has short length and a broad cross-sectional area

The filament has a short length and a wide cross-sectional area

Current

Voltage and Current

Voltage

Resistance

Both current through and voltage across increase due to heightened thermal agitation improving conductivity.

Current decreases while voltage remains constant due to an increase in resistive opposition from higher temperatures.

Current stays unchanged while voltage drops since rising temperatures mainly affect energy levels within atoms.

Both current through and voltage across decrease proportionally as temperature-induced resistive forces rise.

The resistance decreases proportionally with the square root of the area.

There is no relation between the two.

The resistance stays the same regardless of changes made to the area.

The resistance increases proportionally with the area.

$R = \frac{L}{\rho A}$

$R = \rho \left( \frac{A}{L} \right)$

$R = \rho \left( \frac{L}{A} \right)$

$R = \frac{A}{\rho L}$

It halves.

It doubles.

It does not change.

It quadruples.