02. Motional Electromotive Force (MEF)
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Electro Magnetic Induction

154691 An elasticized conducting band is around a spherical balloon. Its plane passes through the centre of balloon. A uniform magnetic field of magnitude $0.04 \mathrm{~T}$ is directed perpendicular to the plane of band. Air is let out of the balloon at 100 $\mathrm{cm}^{3} / \mathrm{s}$ at an instant when the radius of the balloon is $10 \mathrm{~cm}$. The induced emf in the band is

1 $20 \mu \mathrm{V}$
2 $25 \mu \mathrm{V}$
3 $10 \mu \mathrm{V}$
4 $15 \mu \mathrm{V}$
BITSAT-2015
Electro Magnetic Induction

154692 A bicycle generator creates $1.5 \mathrm{~V}$ at $15 \mathrm{~km} / \mathrm{hr}$. The EMF generated at $10 \mathrm{~km} / \mathrm{hr}$ is

1 1.5 volts
2 2 volts
3 0.5 volts
4 1 volts
COMEDK 2015
Electro Magnetic Induction

154693 A wire of length $2.5 \mathrm{~km}$ and resistance $35 \Omega$ has fallen from a height of $10 \mathrm{~m}$ in earth's horizontal field of $2 \times 10^{-5}$ T. The current through the wire is

1 $2 \mathrm{~A}$
2 $0.2 \mathrm{~A}$
3 $0.02 \mathrm{~A}$
4 $0.002 \mathrm{~A}$
COMEDK 2016
Electro Magnetic Induction

154694 A straight wire of mass $200 \mathrm{~g}$ and length $1.5 \mathrm{~m}$ carries a current of $2 \mathrm{~A}$. It is suspended in mid air by a uniform horizontal magnetic field $B$. The magnitude of $B$ (in tesla) is-

1 0.65
2 0.55
3 0.75
4 0.45
BCECE-2015
For More Updates join with Us
Electro Magnetic Induction

154691 An elasticized conducting band is around a spherical balloon. Its plane passes through the centre of balloon. A uniform magnetic field of magnitude $0.04 \mathrm{~T}$ is directed perpendicular to the plane of band. Air is let out of the balloon at 100 $\mathrm{cm}^{3} / \mathrm{s}$ at an instant when the radius of the balloon is $10 \mathrm{~cm}$. The induced emf in the band is

1 $20 \mu \mathrm{V}$
2 $25 \mu \mathrm{V}$
3 $10 \mu \mathrm{V}$
4 $15 \mu \mathrm{V}$
BITSAT-2015
Electro Magnetic Induction

154692 A bicycle generator creates $1.5 \mathrm{~V}$ at $15 \mathrm{~km} / \mathrm{hr}$. The EMF generated at $10 \mathrm{~km} / \mathrm{hr}$ is

1 1.5 volts
2 2 volts
3 0.5 volts
4 1 volts
COMEDK 2015
Electro Magnetic Induction

154693 A wire of length $2.5 \mathrm{~km}$ and resistance $35 \Omega$ has fallen from a height of $10 \mathrm{~m}$ in earth's horizontal field of $2 \times 10^{-5}$ T. The current through the wire is

1 $2 \mathrm{~A}$
2 $0.2 \mathrm{~A}$
3 $0.02 \mathrm{~A}$
4 $0.002 \mathrm{~A}$
COMEDK 2016
Electro Magnetic Induction

154694 A straight wire of mass $200 \mathrm{~g}$ and length $1.5 \mathrm{~m}$ carries a current of $2 \mathrm{~A}$. It is suspended in mid air by a uniform horizontal magnetic field $B$. The magnitude of $B$ (in tesla) is-

1 0.65
2 0.55
3 0.75
4 0.45
BCECE-2015
NEET DIGITAL LIBRARY
Electro Magnetic Induction

154691 An elasticized conducting band is around a spherical balloon. Its plane passes through the centre of balloon. A uniform magnetic field of magnitude $0.04 \mathrm{~T}$ is directed perpendicular to the plane of band. Air is let out of the balloon at 100 $\mathrm{cm}^{3} / \mathrm{s}$ at an instant when the radius of the balloon is $10 \mathrm{~cm}$. The induced emf in the band is

1 $20 \mu \mathrm{V}$
2 $25 \mu \mathrm{V}$
3 $10 \mu \mathrm{V}$
4 $15 \mu \mathrm{V}$
BITSAT-2015
Electro Magnetic Induction

154692 A bicycle generator creates $1.5 \mathrm{~V}$ at $15 \mathrm{~km} / \mathrm{hr}$. The EMF generated at $10 \mathrm{~km} / \mathrm{hr}$ is

1 1.5 volts
2 2 volts
3 0.5 volts
4 1 volts
COMEDK 2015
Electro Magnetic Induction

154693 A wire of length $2.5 \mathrm{~km}$ and resistance $35 \Omega$ has fallen from a height of $10 \mathrm{~m}$ in earth's horizontal field of $2 \times 10^{-5}$ T. The current through the wire is

1 $2 \mathrm{~A}$
2 $0.2 \mathrm{~A}$
3 $0.02 \mathrm{~A}$
4 $0.002 \mathrm{~A}$
COMEDK 2016
Electro Magnetic Induction

154694 A straight wire of mass $200 \mathrm{~g}$ and length $1.5 \mathrm{~m}$ carries a current of $2 \mathrm{~A}$. It is suspended in mid air by a uniform horizontal magnetic field $B$. The magnitude of $B$ (in tesla) is-

1 0.65
2 0.55
3 0.75
4 0.45
BCECE-2015
Join With Us for More Updates
Electro Magnetic Induction

154691 An elasticized conducting band is around a spherical balloon. Its plane passes through the centre of balloon. A uniform magnetic field of magnitude $0.04 \mathrm{~T}$ is directed perpendicular to the plane of band. Air is let out of the balloon at 100 $\mathrm{cm}^{3} / \mathrm{s}$ at an instant when the radius of the balloon is $10 \mathrm{~cm}$. The induced emf in the band is

1 $20 \mu \mathrm{V}$
2 $25 \mu \mathrm{V}$
3 $10 \mu \mathrm{V}$
4 $15 \mu \mathrm{V}$
BITSAT-2015
Electro Magnetic Induction

154692 A bicycle generator creates $1.5 \mathrm{~V}$ at $15 \mathrm{~km} / \mathrm{hr}$. The EMF generated at $10 \mathrm{~km} / \mathrm{hr}$ is

1 1.5 volts
2 2 volts
3 0.5 volts
4 1 volts
COMEDK 2015
Electro Magnetic Induction

154693 A wire of length $2.5 \mathrm{~km}$ and resistance $35 \Omega$ has fallen from a height of $10 \mathrm{~m}$ in earth's horizontal field of $2 \times 10^{-5}$ T. The current through the wire is

1 $2 \mathrm{~A}$
2 $0.2 \mathrm{~A}$
3 $0.02 \mathrm{~A}$
4 $0.002 \mathrm{~A}$
COMEDK 2016
Electro Magnetic Induction

154694 A straight wire of mass $200 \mathrm{~g}$ and length $1.5 \mathrm{~m}$ carries a current of $2 \mathrm{~A}$. It is suspended in mid air by a uniform horizontal magnetic field $B$. The magnitude of $B$ (in tesla) is-

1 0.65
2 0.55
3 0.75
4 0.45
BCECE-2015
For More Updates join with Us