Download App

Electromagnetic Waves — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Waves1 Mark
MCQ
 When is the conduction current the same as the displacement current?
  • A
    When the source is ac
  • B
    When the source is dc
  • C
    When the source is either an ac or a dc
  • D
    When the source is neither dc nor ac
✓

Answer

  1.  When the source is ac

Explanation:

The conduction current is the same as the displacement current when the source is ac.

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 Electromagnetic Waves→Electromagnetic Waves — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Mark the correct options:

→

In hydrogen atom which quantity is integral multiple of  

(a) Angular momentum

(b) Angular velocity

(c) Angular acceleration

(d) Momentum
→

According to Bohr's theory, the expressions for the kinetic and potential energy of an electron revolving in an orbit is given respectively by

(a) +  and   

(b) + and  

(c)  and    

(d)  +  and +  
→

Two short magnets having magnetic moments in the ratio 27 : 8, when placed on opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12 m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is

(a) 0.06 m

(b) 0.08 m

(c) 0.12 m

(d) 0.18 m
→

The fact that photons carry energy was established by

(a) Doppler's effect

(b) Compton's effect

(c) Bohr's theory

(d) Diffraction of light
→
A rod of legth l rotates with a uniform angular velocity $\omega$ about its perpendicular bisector. A uniform magnetic field B exists parallel to the axis of rotation. The potential difference between the two ends of the rod is:
→
In terms of Bohr radius r0, the radius of the second Bohr orbit of a hydrogen atom is given by:
→
In the process of fission, the binding energy per nucleon:
→

Which of the following law is used in the Millikan's method for the determination of charge

(a) Ampere's law

(b) Stoke's law

(c) Fleming's left hand rule

(d) Fleming's right hand rule
→
The storage battery of a car has an emf of 12 V . If the internal resistance of the battery is $0.6 \Omega$ then the maximum current that can be drawn from the battery is ___________ .
→