Download App

Electromagnetic Induction — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectromagnetic Induction1 Mark
MCQ
A thin semicircular conducting ring of radius $R$ is falling with its plane vertical in a horizontal magnetic induction $B$. At the position $M N Q$, the speed of the ring is $V$ and the potential difference developed across the ring is
Image
  • A
    Zero
  • B
    $B v \pi R^2 / 2$ and $M$ is at higher potential
  • C
    $\pi R B V$ and $Q$ is at higher potential
  • ✓
    $2 R B V$ and $Q$ is at higher potential
✓

Answer

Correct option: D.
$2 R B V$ and $Q$ is at higher potential

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 "MCQ" from Electromagnetic Induction→Electromagnetic Induction — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The resistance of $10$ metre long potentiometer wire is $1 \mathrm{ohm} /$ meter: A cell of e.m.f. $2.2$ volts and a high resistance box are connected in series to this wire. The value of resistance taken from resistance box for getting potential gradient of $2.2$ millivolt/metre will be
→
The function $\sin ^2(\omega t)$ represents
→
The energy of hydrogen atom in its ground state is $-13.6\ eV$. The energy of the level corresponding to the quantum number $n$ is equal $5$ is
→
Orbital velocity of earth's satellite near the surface is $7 \mathrm{~km} / \mathrm{s}$. When the radius of the orbit is 4 times than that of earth's radius, then orbital velocity in that orbit is
→
A body slides down a frictionless track which ends in a circular loop of diameter $D$, then the minimum height $h$ of the body in term of $D$ so that it may just complete the loop, is
→
A medium can carry a longitudinal wave because it has the property of
→
The spring extends by $x$ on loading, then energy stored by the spring is : (if $T$ is the tension in spring and $k$ is spring constant)
→
In an ac circuit, the r.m.s. value of current, $l$ is related to the peak current, $l$ by the relation
→
Two vibrating strings of the same material but lengths $L$ and $2 L$ have radii $2 r$ and $r$ respectively. They are stretched under the same tension. Both the strings vibrate in their fundamental modes, the one of length $L$ with frequency $n$ and the other with frequency $n$. The ratio $n / n$ is given by
→
In the circuit shown here, the readings of the ammeter and voltmeter are

Image

→