Question
Which of the following is wrong statement
✓
Answer
If we more a conductor in a region of magnetic field, an emf is induced into it resulting a flow of current. So option $A$ is right. Accooding to lenz's law, emf is induced in such a way that it opposes the cause producing it not always tends to decrease the current. so option $B$ is cosong.
Since $L \propto$ number of magnelic field lines
$i \propto u$
So, $l$ increases if $u_r$ increase, $l=$ self Inductance
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the diagram shown below all three rods are of equal length $L$ and equal mass $M$. The system is rotated such that rod $B$ is the axis. What is the moment of inertia of the system?
→A body starts from rest with an acceleration $a_{1},$ after two seconds another body $B$ starts from rest with an acceleration $a _{2}$. If they travel equal distance in fifth second, after the starts of $A$, the ratio $a _{1}: a _{2}$ will be equal to
→The sliding contact $C$ is at one fourth of the length of the potentiometer wire $( AB )$ from $A$ as shown in the circuit diagram. If the resistance of the wire $AB$ is $R _0$, then the potential drop $( V )$ across the resistor $R$ is
→Ketone reacts with $NH_2OH$ to give oxime. The reaction is as follows
→The total number of organic products (ketoxime) formed when the simplest ketone and it's next higher homologue react with $NH_2OH$, is :
A steel rod $100\,cm$ long is clamped at its middle. The fundamental frequency of longitudinal vibrations of the rod are given to be $2.53\,kHz$. What is the speed of sound in steel ...... $km/sec$
→A particle of mass $0.6\, g$ and having charge of $25\, nC$ is moving horizontally with a uniform velocity ${\rm{1}}{\rm{.2}} \times {\rm{1}}{{\rm{0}}^{\rm{4}}}\,m{s^{ - 1}}$ in a uniform magnetic field, then the value of the magnetic induction is $(g = 10\,m{s^{ - 2}})$
→A charged ball $B$ hangs from a silk thread $S$, which makes an angle $\theta $ with a large charged conducting sheet $P$, as shown in the figure. The surface charge density $\sigma $ of the sheet is proportional to
→A train is running at a constant speed of $90 \,km / h$ on a straight track. A person standing at the top of a boggey moves in the direction of motion of the train such that he covers 1 meters on the train each second. The speed of the person with respect to ground is .........
→Consider a spherical drop of radius $R$. Surface tension of the liquid is $\sigma$ . Force of surface tension on shaded sub hemisphere due to remaining drop is $0.5\,\pi \sigma R$ . The value of- angle $\theta$ (angle subtended hy the sub hemisphere at centre of drop) is ......$^o$
→In the circuit shown in the figure below, which of the following statement is incorrect ?
