Download App

Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity2 Marks
Question
Define the term resistivity and write the SI unit.
✓

Answer

The resistivity of a material of a conductor is defined as the resistance offered by a conductor of length 1m and area of cross-section 1m2. Its SI unit is ohm × metre ($\Omega\text{m}$).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Current Electricity→Current Electricity — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A positive charge q is placed in front of a conducting solid cube at a distance d from its centre. Find the electric field at the centre of the cube due to the charges appearing on its surface.
→
One person says that the potential energy of a particular book kept in an almirah is 20J and the other says it is 30J. Is one of them necessarily wrong?
→
A ray of  light passing through an equilateral triangular glass prism from air undergoes minimum deviation when angle of incidence is 3/4th of the angle of the prism. Calculate the speed of light in the prism.
→
Why are small pieces of paper attracted by a dry comb rubbed against dry hair?
→
Why is transmission of electric power at very far distance done at very high voltage ?
→
At what separation should two equal charges, 1.0C each, be placed so that the force between them equals the weight of a 50kg person?
→
Explain how the mass of an electron can be found using Millikan's oil drop experiment.
→
Obtain the expression for the magnetic energy stored in a solenoid in terms of magnetic field B , area A and length $l$ of the solenoid and hence obtain formula for magnetic energy per unit volume.
→
A single lens is mounted in a tube. A parallel beam enters the tube and emerges out of the tube as a divergent beam. Can you say with certainty that there is a diverging lens in the tube?
→
Explain ground state and ionisation energy of hydrogen atom.
→