In Faraday-Henry’s experiment, a coil is conn | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) $1$. According to Faraday's law of electromagnetic induction, an induced electromotive force $(emf)$ is produced in a coil whenever there is a cha

Vedclass · Accepted Answer

Only d

Vedclass · Answer

(D) $1$. According to Faraday's law of electromagnetic induction, an induced electromotive force $(emf)$ is produced in a coil whenever there is a change in the magnetic flux linked with it.$2$. Relative motion between the coil and the magnet is necessary to change the magnetic flux linked with the coil.$3$. In cases $(a)$, $(b)$, and $(c)$, there is relative motion between the coil and the magnet, so the magnetic flux changes and the galvanometer pointer deflects.$4$. In case $(d)$, there is no relative motion between the coil and the magnet, so the magnetic flux remains constant and there is no deflection in the galvanometer.$5$. Therefore, statement $(d)$ is the only wrong statement regarding the condition for deflection.

Similar Questions

$A$ cylindrical bar magnet is kept along the axis of a circular coil. If the magnet is rotated about its axis,then

Assertion $(A)$: When a circular coil,placed in a region with its plane parallel to a magnetic field,expands radially outwards,no emf is induced in it.
Reason $(R)$: There is a constant magnetic field in the perpendicular (to the plane of the coil) direction.

$A$ conducting coil having $500$ turns has a cross-sectional area of $0.15 \ m^2$. $A$ magnetic field of strength $0.2 \ T$ linked perpendicular to this area changes to $1.0 \ T$ in $0.4 \ s$. The induced emf produced in the coil will be . . . . . . $V$.

$A$ space consists of two uniform magnetic fields,as shown. $A$ conducting circular loop is placed symmetrically at the boundary.

Magnetic flux passing through a coil is initially $4 \times 10^{-4} \ Wb$. It reduces to $10 \%$ of its original value in $t$ seconds. If the induced emf is $0.72 \ mV$,then $t$ in seconds is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module