00. Magnetic Flux, Faraday's Law
Electro Magnetic Induction

154555 A conducting ring of radius $1 \mathrm{~m}$ kept in a uniform magnetic field $B$ of $0.01 \mathrm{~T}$, rotates uniformly with an angular velocity $100 \mathrm{rads}^{-1}$ with its axis of rotation perpendicular to $B$.
The maximum induced emf in it is

1 $1.5 \pi \mathrm{V}$
2 $\pi \mathrm{V}$
3 $2 \pi \mathrm{V}$
4 $0.5 \pi \mathrm{V}$
5 $4 \pi \mathrm{V}$
Electro Magnetic Induction

154556 A 100 turns coil of area of cross-section 200 $\mathrm{cm}^{2}$ having $2 \Omega$ resistance is held perpendicular to a magnetic field of $0.1 \mathrm{~T}$. If it is removed from the magnetic field in one second, the induced charge produced in it is

1 $0.2 \mathrm{C}$
2 $2 \mathrm{C}$
3 $0.1 \mathrm{C}$
4 $1 \mathrm{C}$
5 $20 \mathrm{C}$
Electro Magnetic Induction

154558 A $50 \mathrm{~Hz}$ AC current of peak value 2 A flows through one of the pair of coils. If the mutual inductance between the pair of coils is $150 \mathrm{mH}$, then the peak value of voltage induced in the second coil is

1 $30 \pi \mathrm{V}$
2 $60 \pi \mathrm{V}$
3 $15 \pi \mathrm{V}$
4 $300 \pi \mathrm{V}$
5 $3 \pi \mathrm{V}$
Electro Magnetic Induction

154559 A coil of 100 turns and area $2 \times 10^{-2} \mathrm{~m}^{2}$, pivoted about a vertical diameter in a uniform magnetic field carries a current of $5 \mathrm{~A}$. When the coil is held with its plane in North-south direction, it experiences a torque of $0.3 \mathrm{Nm}$. When the plane is in East-West direction the torque is $0.4 \mathrm{Nm}$. The value of magnetic induction is (Neglect earth's magnetic field)

1 $0.2 \mathrm{~T}$
2 $0.3 \mathrm{~T}$
3 $0.4 \mathrm{~T}$
4 $0.1 \mathrm{~T}$
5 $0.05 \mathrm{~T}$
Electro Magnetic Induction

154555 A conducting ring of radius $1 \mathrm{~m}$ kept in a uniform magnetic field $B$ of $0.01 \mathrm{~T}$, rotates uniformly with an angular velocity $100 \mathrm{rads}^{-1}$ with its axis of rotation perpendicular to $B$.
The maximum induced emf in it is

1 $1.5 \pi \mathrm{V}$
2 $\pi \mathrm{V}$
3 $2 \pi \mathrm{V}$
4 $0.5 \pi \mathrm{V}$
5 $4 \pi \mathrm{V}$
Electro Magnetic Induction

154556 A 100 turns coil of area of cross-section 200 $\mathrm{cm}^{2}$ having $2 \Omega$ resistance is held perpendicular to a magnetic field of $0.1 \mathrm{~T}$. If it is removed from the magnetic field in one second, the induced charge produced in it is

1 $0.2 \mathrm{C}$
2 $2 \mathrm{C}$
3 $0.1 \mathrm{C}$
4 $1 \mathrm{C}$
5 $20 \mathrm{C}$
Electro Magnetic Induction

154558 A $50 \mathrm{~Hz}$ AC current of peak value 2 A flows through one of the pair of coils. If the mutual inductance between the pair of coils is $150 \mathrm{mH}$, then the peak value of voltage induced in the second coil is

1 $30 \pi \mathrm{V}$
2 $60 \pi \mathrm{V}$
3 $15 \pi \mathrm{V}$
4 $300 \pi \mathrm{V}$
5 $3 \pi \mathrm{V}$
Electro Magnetic Induction

154559 A coil of 100 turns and area $2 \times 10^{-2} \mathrm{~m}^{2}$, pivoted about a vertical diameter in a uniform magnetic field carries a current of $5 \mathrm{~A}$. When the coil is held with its plane in North-south direction, it experiences a torque of $0.3 \mathrm{Nm}$. When the plane is in East-West direction the torque is $0.4 \mathrm{Nm}$. The value of magnetic induction is (Neglect earth's magnetic field)

1 $0.2 \mathrm{~T}$
2 $0.3 \mathrm{~T}$
3 $0.4 \mathrm{~T}$
4 $0.1 \mathrm{~T}$
5 $0.05 \mathrm{~T}$
Electro Magnetic Induction

154555 A conducting ring of radius $1 \mathrm{~m}$ kept in a uniform magnetic field $B$ of $0.01 \mathrm{~T}$, rotates uniformly with an angular velocity $100 \mathrm{rads}^{-1}$ with its axis of rotation perpendicular to $B$.
The maximum induced emf in it is

1 $1.5 \pi \mathrm{V}$
2 $\pi \mathrm{V}$
3 $2 \pi \mathrm{V}$
4 $0.5 \pi \mathrm{V}$
5 $4 \pi \mathrm{V}$
Electro Magnetic Induction

154556 A 100 turns coil of area of cross-section 200 $\mathrm{cm}^{2}$ having $2 \Omega$ resistance is held perpendicular to a magnetic field of $0.1 \mathrm{~T}$. If it is removed from the magnetic field in one second, the induced charge produced in it is

1 $0.2 \mathrm{C}$
2 $2 \mathrm{C}$
3 $0.1 \mathrm{C}$
4 $1 \mathrm{C}$
5 $20 \mathrm{C}$
Electro Magnetic Induction

154558 A $50 \mathrm{~Hz}$ AC current of peak value 2 A flows through one of the pair of coils. If the mutual inductance between the pair of coils is $150 \mathrm{mH}$, then the peak value of voltage induced in the second coil is

1 $30 \pi \mathrm{V}$
2 $60 \pi \mathrm{V}$
3 $15 \pi \mathrm{V}$
4 $300 \pi \mathrm{V}$
5 $3 \pi \mathrm{V}$
Electro Magnetic Induction

154559 A coil of 100 turns and area $2 \times 10^{-2} \mathrm{~m}^{2}$, pivoted about a vertical diameter in a uniform magnetic field carries a current of $5 \mathrm{~A}$. When the coil is held with its plane in North-south direction, it experiences a torque of $0.3 \mathrm{Nm}$. When the plane is in East-West direction the torque is $0.4 \mathrm{Nm}$. The value of magnetic induction is (Neglect earth's magnetic field)

1 $0.2 \mathrm{~T}$
2 $0.3 \mathrm{~T}$
3 $0.4 \mathrm{~T}$
4 $0.1 \mathrm{~T}$
5 $0.05 \mathrm{~T}$
Electro Magnetic Induction

154555 A conducting ring of radius $1 \mathrm{~m}$ kept in a uniform magnetic field $B$ of $0.01 \mathrm{~T}$, rotates uniformly with an angular velocity $100 \mathrm{rads}^{-1}$ with its axis of rotation perpendicular to $B$.
The maximum induced emf in it is

1 $1.5 \pi \mathrm{V}$
2 $\pi \mathrm{V}$
3 $2 \pi \mathrm{V}$
4 $0.5 \pi \mathrm{V}$
5 $4 \pi \mathrm{V}$
Electro Magnetic Induction

154556 A 100 turns coil of area of cross-section 200 $\mathrm{cm}^{2}$ having $2 \Omega$ resistance is held perpendicular to a magnetic field of $0.1 \mathrm{~T}$. If it is removed from the magnetic field in one second, the induced charge produced in it is

1 $0.2 \mathrm{C}$
2 $2 \mathrm{C}$
3 $0.1 \mathrm{C}$
4 $1 \mathrm{C}$
5 $20 \mathrm{C}$
Electro Magnetic Induction

154558 A $50 \mathrm{~Hz}$ AC current of peak value 2 A flows through one of the pair of coils. If the mutual inductance between the pair of coils is $150 \mathrm{mH}$, then the peak value of voltage induced in the second coil is

1 $30 \pi \mathrm{V}$
2 $60 \pi \mathrm{V}$
3 $15 \pi \mathrm{V}$
4 $300 \pi \mathrm{V}$
5 $3 \pi \mathrm{V}$
Electro Magnetic Induction

154559 A coil of 100 turns and area $2 \times 10^{-2} \mathrm{~m}^{2}$, pivoted about a vertical diameter in a uniform magnetic field carries a current of $5 \mathrm{~A}$. When the coil is held with its plane in North-south direction, it experiences a torque of $0.3 \mathrm{Nm}$. When the plane is in East-West direction the torque is $0.4 \mathrm{Nm}$. The value of magnetic induction is (Neglect earth's magnetic field)

1 $0.2 \mathrm{~T}$
2 $0.3 \mathrm{~T}$
3 $0.4 \mathrm{~T}$
4 $0.1 \mathrm{~T}$
5 $0.05 \mathrm{~T}$
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