Induced Electromotive Force
PHXII06:ELECTROMAGNETIC INDUCTION

358453 A cycle wheel with 64 spokes is rotating with \(N\) rotations per second at right angles to horizontal component of magnetic field. The induced e.m.f. generated between its axle and rim is \(E\). If the number of spokes is reduced to 32 then the value of induced e.m.f. will be

1 \(E\)
2 \(2\;E\)
3 \({E{\rm{/}}2}\)
4 \({E{\rm{/}}4}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358454 An \(emf\) of \(0.08\;V\) is induced in a metal rod of length \(10\;cm\) held normal to a uniform magnetic field of \(0.4 T\), when moves with a velocity of

1 \(3.2\;m{s^{ - 1}}\)
2 \(2\;m{s^{ - 1}}\)
3 \(0.5\;m{s^{ - 1}}\)
4 \(20\;m{s^{ - 1}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358455 A structure formed from two straight conducting rods forming a right angle, is placed in a uniform magnetic field with \({B=0.40 {~T}}\) is directed out of the page. A straight conducting bar in contact with the structure, starts at the vertex at time \({t=0}\) and moves with a constant velocity of \({5.0 {~m} / {s}}\) along them. The \(emf\) around the triangle at that time \({t=4.0 {~s}}\) is
supporting img

1 \(40\,V\)
2 \(70\,V\)
3 \(50\,V\)
4 \(80\,V\)
PHXII06:ELECTROMAGNETIC INDUCTION

358456 A wire of length \(50\,cm\) moves with a velocity of \(300\;m{\rm{/}}\min \), perpendicular to a magnetic field. If the e.m.f induced in the wire is \(2\,V\), the magnitude of the field in tesla is

1 2
2 5
3 0.8
4 2.5
PHXII06:ELECTROMAGNETIC INDUCTION

358453 A cycle wheel with 64 spokes is rotating with \(N\) rotations per second at right angles to horizontal component of magnetic field. The induced e.m.f. generated between its axle and rim is \(E\). If the number of spokes is reduced to 32 then the value of induced e.m.f. will be

1 \(E\)
2 \(2\;E\)
3 \({E{\rm{/}}2}\)
4 \({E{\rm{/}}4}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358454 An \(emf\) of \(0.08\;V\) is induced in a metal rod of length \(10\;cm\) held normal to a uniform magnetic field of \(0.4 T\), when moves with a velocity of

1 \(3.2\;m{s^{ - 1}}\)
2 \(2\;m{s^{ - 1}}\)
3 \(0.5\;m{s^{ - 1}}\)
4 \(20\;m{s^{ - 1}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358455 A structure formed from two straight conducting rods forming a right angle, is placed in a uniform magnetic field with \({B=0.40 {~T}}\) is directed out of the page. A straight conducting bar in contact with the structure, starts at the vertex at time \({t=0}\) and moves with a constant velocity of \({5.0 {~m} / {s}}\) along them. The \(emf\) around the triangle at that time \({t=4.0 {~s}}\) is
supporting img

1 \(40\,V\)
2 \(70\,V\)
3 \(50\,V\)
4 \(80\,V\)
PHXII06:ELECTROMAGNETIC INDUCTION

358456 A wire of length \(50\,cm\) moves with a velocity of \(300\;m{\rm{/}}\min \), perpendicular to a magnetic field. If the e.m.f induced in the wire is \(2\,V\), the magnitude of the field in tesla is

1 2
2 5
3 0.8
4 2.5
PHXII06:ELECTROMAGNETIC INDUCTION

358453 A cycle wheel with 64 spokes is rotating with \(N\) rotations per second at right angles to horizontal component of magnetic field. The induced e.m.f. generated between its axle and rim is \(E\). If the number of spokes is reduced to 32 then the value of induced e.m.f. will be

1 \(E\)
2 \(2\;E\)
3 \({E{\rm{/}}2}\)
4 \({E{\rm{/}}4}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358454 An \(emf\) of \(0.08\;V\) is induced in a metal rod of length \(10\;cm\) held normal to a uniform magnetic field of \(0.4 T\), when moves with a velocity of

1 \(3.2\;m{s^{ - 1}}\)
2 \(2\;m{s^{ - 1}}\)
3 \(0.5\;m{s^{ - 1}}\)
4 \(20\;m{s^{ - 1}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358455 A structure formed from two straight conducting rods forming a right angle, is placed in a uniform magnetic field with \({B=0.40 {~T}}\) is directed out of the page. A straight conducting bar in contact with the structure, starts at the vertex at time \({t=0}\) and moves with a constant velocity of \({5.0 {~m} / {s}}\) along them. The \(emf\) around the triangle at that time \({t=4.0 {~s}}\) is
supporting img

1 \(40\,V\)
2 \(70\,V\)
3 \(50\,V\)
4 \(80\,V\)
PHXII06:ELECTROMAGNETIC INDUCTION

358456 A wire of length \(50\,cm\) moves with a velocity of \(300\;m{\rm{/}}\min \), perpendicular to a magnetic field. If the e.m.f induced in the wire is \(2\,V\), the magnitude of the field in tesla is

1 2
2 5
3 0.8
4 2.5
PHXII06:ELECTROMAGNETIC INDUCTION

358453 A cycle wheel with 64 spokes is rotating with \(N\) rotations per second at right angles to horizontal component of magnetic field. The induced e.m.f. generated between its axle and rim is \(E\). If the number of spokes is reduced to 32 then the value of induced e.m.f. will be

1 \(E\)
2 \(2\;E\)
3 \({E{\rm{/}}2}\)
4 \({E{\rm{/}}4}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358454 An \(emf\) of \(0.08\;V\) is induced in a metal rod of length \(10\;cm\) held normal to a uniform magnetic field of \(0.4 T\), when moves with a velocity of

1 \(3.2\;m{s^{ - 1}}\)
2 \(2\;m{s^{ - 1}}\)
3 \(0.5\;m{s^{ - 1}}\)
4 \(20\;m{s^{ - 1}}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358455 A structure formed from two straight conducting rods forming a right angle, is placed in a uniform magnetic field with \({B=0.40 {~T}}\) is directed out of the page. A straight conducting bar in contact with the structure, starts at the vertex at time \({t=0}\) and moves with a constant velocity of \({5.0 {~m} / {s}}\) along them. The \(emf\) around the triangle at that time \({t=4.0 {~s}}\) is
supporting img

1 \(40\,V\)
2 \(70\,V\)
3 \(50\,V\)
4 \(80\,V\)
PHXII06:ELECTROMAGNETIC INDUCTION

358456 A wire of length \(50\,cm\) moves with a velocity of \(300\;m{\rm{/}}\min \), perpendicular to a magnetic field. If the e.m.f induced in the wire is \(2\,V\), the magnitude of the field in tesla is

1 2
2 5
3 0.8
4 2.5