A rectangular coil A B C D is rotated anticlockwise with a uniform angular velocity about the axis shown in the figure. The axis of rotation of the coil as well as the magnetic field B are horizontal. The induced emf in the coil would be minimum when the plane of the coil

Question

A rectangular coil A B C D is rotated anticlockwise with a uniform angular velocity about the axis shown in the figure. The axis of rotation of the coil as well as the magnetic field B are horizontal. The induced emf in the coil would be minimum when the plane of the coil (A) is horizontal (B) makes an angle of 45° with the direction of magnetic field (C) is at right angle to the magnetic field (D) makes an angel of 30° with the magnetic field

Tardigrade Admin · Accepted Answer

ε=B ⋅ A N ω sin θ ε=0 when θ=0, θ=0 means normal to the plane of the coil and magnetic field are parallel. It means plane of coil is at right angle to the magnetic field.

Q. A rectangular coil $A BC D$ is rotated anticlockwise with a uniform angular velocity about the axis shown in the figure. The axis of rotation of the coil as well as the magnetic field $B$ are horizontal. The induced emf in the coil would be minimum when the plane of the coil

is horizontal

makes an angle of $4 5^{\circ}$ with the direction of magnetic field

is at right angle to the magnetic field

makes an angel of $3 0^{\circ}$ with the magnetic field

$ε = B \cdot A N ω sin θ$
$ε = 0$ when $θ = 0, θ = 0$
means normal to the plane of the coil and magnetic field are parallel. It means plane of coil is at right angle to the magnetic field.

Q. A rectangular coil ABCD is rotated anticlockwise with a uniform angular velocity about the axis shown in the figure. The axis of rotation of the coil as well as the magnetic field B are horizontal. The induced emf in the coil would be minimum when the plane of the coil

is horizontal

makes an angle of 45∘ with the direction of magnetic field

is at right angle to the magnetic field

makes an angel of 30∘ with the magnetic field

ε=B⋅ANωsinθ ε=0 when θ=0,θ=0 means normal to the plane of the coil and magnetic field are parallel. It means plane of coil is at right angle to the magnetic field.

Q. A rectangular coil $A BC D$ is rotated anticlockwise with a uniform angular velocity about the axis shown in the figure. The axis of rotation of the coil as well as the magnetic field $B$ are horizontal. The induced emf in the coil would be minimum when the plane of the coil

makes an angle of $4 5^{\circ}$ with the direction of magnetic field

makes an angel of $3 0^{\circ}$ with the magnetic field

$ε = B \cdot A N ω sin θ$
$ε = 0$ when $θ = 0, θ = 0$
means normal to the plane of the coil and magnetic field are parallel. It means plane of coil is at right angle to the magnetic field.