Download App

Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
MCQ
Drift velocity of electrons is due to:
  • A
    Motion of conduction electrons due to random collisions.
  • ✓
    Motion of conduction electrons due to electric field .$\rightarrow E$
  • C
    Repulsion to the conduction electrons due to inner electrons of ions.
  • D
    Collision of conduction electrons with each other.
✓

Answer

Correct option: B.
Motion of conduction electrons due to electric field .$\rightarrow E$

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 "M.C.Q (1 Marks)" 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

An $A.C$ source is connected to a resistive circuit. Which of the following is true ?
→
The angle between the earth's magnetic and the earth's geographical axes is
→
The half-life of a radioactive substance is $40$ years. How long will it take to reduce to one fourth of its original amount and what is the value of decay constant
→
Effective resistance between $A$ and $B$ is ........... $\Omega$
→
A current of $0.1 A$ circulates around a coil of $100$ turns and having a radius equal to $5\ cm$. The magnetic field set up at the centre of the coil is $(m_0= 4π × 10^{-7}$ weber/amp-metre$)$
 
→
Magnetic lines of force:
→
An e.m.f is produced in a coil, which is not connected to an external voltage source. This can be due to:
→
When a photon of light collides with a metal surface, number of electrons, (if any) coming out is
→
An electron having charge $1.6 \times {10^{ - 19}}\,C$ and mass $9 \times {10^{ - 31}}\,kg$ is moving with $4 \times {10^6}\,m{s^{ - 1}}$ speed in a magnetic field $2 \times {10^{ - 1}}\,tesla$ in a circular orbit. The force acting on electron and the radius of the circular orbit will be
→
The value of the resistance $R$ in figure is adjusted such that power dissipated in the $2\,\Omega$ resistor is maximum. Under this condition
→