Download App

Electric Current in Conductors — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectric Current in Conductors1 Mark
Question
When a current is established in a wire, the free electrons drift in the direction opposite to the current. Does the number of free electrons in the wire continuously decrease?
✓

Answer

No the complete circuit (which is the only condition to flow current) restores number of electrons equal to the number of electrons passed through wire.

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

Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

$\tau$ is known as relaxation time. State factors on which it depends and factors on which it does not depend
→
What is the average value of alternating current in one complete cycle?
→
Why can't two lines of electric force intersect each other?
→
How does the angular separation between fringes in single-slit diffraction experiment change when the distance of separation between the slit and screen is doubled?
→
What is the amount of work done in moving a point charge Q around a circular arc of radius ‘r' at the centre of which another point charge ‘q' is located?
→
For a transistor amplifier, the voltage gain,
  1. Remains constant for all frequencies.
  2. Is high at high and low frequencies and constant in the middle frequency range.
  3. Is low at high and low frequencies and constant at mid frequencies.
  4. None of the above.
→
A 5.0cm long straight piece of thread is kept on the surface of water. Find the force with which the surface on one side of the thread pulls it. Surface tension of water = 0.076N/m.
→
What is the height of the final image of the tower if it is formed at 25cm?
→
If on converting galvanometer of resistance G into ammeter, 1% of main current passes through the galvanometer, then what is the resistance of the shunt?
→
The motion of copper plate is damped when it is allowed to oscillate between the two poles of a magnet. What is the cause of this damping?
→