154711 A straight conductor of length $0.4 \mathrm{~m}$ is moved with a speed of $7 \mathrm{~m} / \mathrm{s}$ perpendicular to a magnetic field of intensity $0.9 \mathrm{~Wb} / \mathrm{m}^{2}$. The induced emf across the conductor will be

154712 A magnetic field of $2 \times 10^{-2} \mathrm{~T}$ acts at right angles to a coil of area $100 \mathrm{~cm}^{2}$, with 50 turns. The average emf induced in the coil is $0.1 \mathrm{~V}$, when it is removed from the field in $t$ second. The value of $t$ is

154713 In a region of uniform magnetic induction $B=$ $10^{-2} \mathrm{~T}$, tesla a circular coil of radius $30 \mathrm{~cm}$ and resistance $\pi^{2} \mathrm{ohm}$ is rotated about an axis which is perpendicular to the direction of $B$ and which forms a diameter of the coil.
If the coil rotates at $200 \mathrm{rpm}$ the amplitude of the alternating current induced in the coil is

154715 A conducting circular loop is placed in a uniform magnetic field $0.04 \mathrm{~T}$ with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at $2 \mathrm{~mm} \mathrm{~s}^{-1}$. The induced emf in the loop when the radius is $2 \mathrm{~cm}$ is

154711 A straight conductor of length $0.4 \mathrm{~m}$ is moved with a speed of $7 \mathrm{~m} / \mathrm{s}$ perpendicular to a magnetic field of intensity $0.9 \mathrm{~Wb} / \mathrm{m}^{2}$. The induced emf across the conductor will be

154712 A magnetic field of $2 \times 10^{-2} \mathrm{~T}$ acts at right angles to a coil of area $100 \mathrm{~cm}^{2}$, with 50 turns. The average emf induced in the coil is $0.1 \mathrm{~V}$, when it is removed from the field in $t$ second. The value of $t$ is

154713 In a region of uniform magnetic induction $B=$ $10^{-2} \mathrm{~T}$, tesla a circular coil of radius $30 \mathrm{~cm}$ and resistance $\pi^{2} \mathrm{ohm}$ is rotated about an axis which is perpendicular to the direction of $B$ and which forms a diameter of the coil.
If the coil rotates at $200 \mathrm{rpm}$ the amplitude of the alternating current induced in the coil is

154715 A conducting circular loop is placed in a uniform magnetic field $0.04 \mathrm{~T}$ with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at $2 \mathrm{~mm} \mathrm{~s}^{-1}$. The induced emf in the loop when the radius is $2 \mathrm{~cm}$ is

154711 A straight conductor of length $0.4 \mathrm{~m}$ is moved with a speed of $7 \mathrm{~m} / \mathrm{s}$ perpendicular to a magnetic field of intensity $0.9 \mathrm{~Wb} / \mathrm{m}^{2}$. The induced emf across the conductor will be

154712 A magnetic field of $2 \times 10^{-2} \mathrm{~T}$ acts at right angles to a coil of area $100 \mathrm{~cm}^{2}$, with 50 turns. The average emf induced in the coil is $0.1 \mathrm{~V}$, when it is removed from the field in $t$ second. The value of $t$ is

154713 In a region of uniform magnetic induction $B=$ $10^{-2} \mathrm{~T}$, tesla a circular coil of radius $30 \mathrm{~cm}$ and resistance $\pi^{2} \mathrm{ohm}$ is rotated about an axis which is perpendicular to the direction of $B$ and which forms a diameter of the coil.
If the coil rotates at $200 \mathrm{rpm}$ the amplitude of the alternating current induced in the coil is

154715 A conducting circular loop is placed in a uniform magnetic field $0.04 \mathrm{~T}$ with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at $2 \mathrm{~mm} \mathrm{~s}^{-1}$. The induced emf in the loop when the radius is $2 \mathrm{~cm}$ is

154711 A straight conductor of length $0.4 \mathrm{~m}$ is moved with a speed of $7 \mathrm{~m} / \mathrm{s}$ perpendicular to a magnetic field of intensity $0.9 \mathrm{~Wb} / \mathrm{m}^{2}$. The induced emf across the conductor will be

154712 A magnetic field of $2 \times 10^{-2} \mathrm{~T}$ acts at right angles to a coil of area $100 \mathrm{~cm}^{2}$, with 50 turns. The average emf induced in the coil is $0.1 \mathrm{~V}$, when it is removed from the field in $t$ second. The value of $t$ is

154713 In a region of uniform magnetic induction $B=$ $10^{-2} \mathrm{~T}$, tesla a circular coil of radius $30 \mathrm{~cm}$ and resistance $\pi^{2} \mathrm{ohm}$ is rotated about an axis which is perpendicular to the direction of $B$ and which forms a diameter of the coil.
If the coil rotates at $200 \mathrm{rpm}$ the amplitude of the alternating current induced in the coil is

154715 A conducting circular loop is placed in a uniform magnetic field $0.04 \mathrm{~T}$ with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at $2 \mathrm{~mm} \mathrm{~s}^{-1}$. The induced emf in the loop when the radius is $2 \mathrm{~cm}$ is