A semi circular arc of radius R is placed in a uniform magnetic field as shown. It is pulled with a constant velocity. The induced emf in the arc is:

Question

A semi circular arc of radius R is placed in a uniform magnetic field as shown. It is pulled with a constant velocity. The induced emf in the arc is: (A) Bv(π R) (B) Bv(2 π R) (C) Bv(2 R ) (D) Bv ( R )

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/493072aaf24b79f53718b871de07c20b-.png" /> EMF = Bv (2 R ) sin 30° = BRv

Q. A semi circular arc of radius $R$ is placed in a uniform magnetic field as shown. It is pulled with a constant velocity. The induced emf in the arc is:

$B v (π R)$

$B v (2 π R)$

$B v (2 R)$

$B v (R)$

$EMF = B v (2 R) sin 3 0^{\circ}$
$= BR v$

Q. A semi circular arc of radius R is placed in a uniform magnetic field as shown. It is pulled with a constant velocity. The induced emf in the arc is:

Bv(πR)

Bv(2πR)

Bv(2R)

Bv(R)