Download App

Electromagnetic Induction — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
MCQ
Complete the following sentence:
  • ✓
    The current is induced in a closed circuit only if there is $.....$
  • B
    change in number of magnetic field lines linked with the circuit.
  • C
    no change in number of magnetic field lines linked with the circuit.
  • D
    no change in number of gravitational field lines linked with the circuit.
✓

Answer

Correct option: A.
The current is induced in a closed circuit only if there is $.....$
The current is induced in a closed circuit only if there is a change in number of magnetic field lines in the circuit due to electromagnetic induction according to Faraday's law.

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

Similar questions

A bar magnet of magnetic moment $10^4\,J/T$ is free to rotate in a horizontal plane. The work done in rotating the magnet slowly from a direction parallel to a horizontal magnetic field of $4×10^{-5}\, T$ to a direction $ 60° $ from the field will be.....$ J$
→
In a series $LCR$ circuit, the inductance, capacitance and resistance are $L =100\, mH , C =100 \mu F$ and $R =$ $10 \Omega$ respectively. They are connected to an $AC$ source of voltage $220\, V$ and frequency of $50\, Hz$. The approximate value of current in the circuit will be.....$A.$
→
Two lenses having $f_1: f_2=2: 3$ has combination to make no dispersion. Find the ratio of dispersive power of glasses used
→
According to de-Broglie, the de-Broglie wavelength for electron in an orbit of (radius $5.3\times10^{-11}\,m$) hydrogen atom is $10^{-10}\, m$. The Principle quantum number for this electron is
→
The mass number of He is 4 and that for sulphur is 32. The radius of sulphur nucleus is larger than that of helium, by times
→
In optical bench experiment index error is $+1\ cm$ and $-1\ cm$ , between object needle and lens, lens and image needle respectively. Observed values of $u$ and $v$ are $9\ cm$ and $17\ cm$ . Focal length of lens is .....$cm$
→
In hydrogen atom, when electron jumps from second to first orbit, then energy emitted is
→
A lens when placed on a plane mirror then object needle and its image coincide at $15 \,cm$. The focal length of the lens is......$cm$
→
An empty thick conducting shell of inner radius $a$ and outer radius $b$ is shown in figure.If it is observed that the inner face of the shell carries a uniform charge density $-\sigma$ and the surface carries a uniform charge density $ '\sigma '$

If the charge $q_A$ is slowly moved inside the shell, then choose the statement$(s)$

→
The average life T and the decay constant λ of a radioactive nucleus are related as
→