Induced Electromotive Force
PHXII06:ELECTROMAGNETIC INDUCTION

358487 A conducting loop being pulled out of magnetic field with a speed \(v\). Which of the following plots may represent the power delivered by the pulling agent as a function of the speed \(v\) ?
supporting img

1 \(a\)
2 \(b\)
3 \(c\)
4 \(d\)
PHXII06:ELECTROMAGNETIC INDUCTION

358488 A pair of long conducting rails are held vertical at a separation \({l=50 {~cm}}\). The top ends are connected by a resistance of \({R=0.5 \Omega}\) and a fuse \({(F)}\) of negligible resistance. A conducting rod is free to slide along the rails under gravity The whole system is in a uniform horizontal magnetic field \({B=1.5 {~T}}\) as shown. Resistance of the rod and rails are negligible and the rod remains horizontal as it moves. The rod is released from rest. Find the minimum mass of the rod that will ensure that the fuse blows out. It is known that rating of the fuse is 4 \(A\) .
supporting img

1 \(0.1\,kg\)
2 \(0.3\,kg\)
3 \(0.5\,kg\)
4 \(0.7\,kg\)
PHXII06:ELECTROMAGNETIC INDUCTION

358489 A conducting rod \({A B}\) of length \({l=1 {~m}}\) is moving at a velocity \({v=4 {~m} / {s}}\), making an angle \({30^{\circ}}\) with its length. If a uniform magnetic field \({B=2 T}\) exists in a direction perpendicular to the plane of motion, then
supporting img

1 \({V_{A}-V_{B}=8 V}\)
2 \({V_{A}-V_{B}=4 V}\)
3 \({V_{B}-V_{A}=8 V}\)
4 \({V_{B}-V_{A}=4 V}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358490 The magnitude of the earth's magnetic field at a place is \(B_{0}\) and the angle of dip is \(\delta\). A horizontal conductor of length \(l\) lying along the magnetic north-south moves eastwards with a velocity \(v\). The emf induced across the conductor is

1 \(B_{0} l v\)
2 \(B_{0} l v \sin \delta\)
3 Zero
4 \(B_{0} l v / 2\)
PHXII06:ELECTROMAGNETIC INDUCTION

358487 A conducting loop being pulled out of magnetic field with a speed \(v\). Which of the following plots may represent the power delivered by the pulling agent as a function of the speed \(v\) ?
supporting img

1 \(a\)
2 \(b\)
3 \(c\)
4 \(d\)
PHXII06:ELECTROMAGNETIC INDUCTION

358488 A pair of long conducting rails are held vertical at a separation \({l=50 {~cm}}\). The top ends are connected by a resistance of \({R=0.5 \Omega}\) and a fuse \({(F)}\) of negligible resistance. A conducting rod is free to slide along the rails under gravity The whole system is in a uniform horizontal magnetic field \({B=1.5 {~T}}\) as shown. Resistance of the rod and rails are negligible and the rod remains horizontal as it moves. The rod is released from rest. Find the minimum mass of the rod that will ensure that the fuse blows out. It is known that rating of the fuse is 4 \(A\) .
supporting img

1 \(0.1\,kg\)
2 \(0.3\,kg\)
3 \(0.5\,kg\)
4 \(0.7\,kg\)
PHXII06:ELECTROMAGNETIC INDUCTION

358489 A conducting rod \({A B}\) of length \({l=1 {~m}}\) is moving at a velocity \({v=4 {~m} / {s}}\), making an angle \({30^{\circ}}\) with its length. If a uniform magnetic field \({B=2 T}\) exists in a direction perpendicular to the plane of motion, then
supporting img

1 \({V_{A}-V_{B}=8 V}\)
2 \({V_{A}-V_{B}=4 V}\)
3 \({V_{B}-V_{A}=8 V}\)
4 \({V_{B}-V_{A}=4 V}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358490 The magnitude of the earth's magnetic field at a place is \(B_{0}\) and the angle of dip is \(\delta\). A horizontal conductor of length \(l\) lying along the magnetic north-south moves eastwards with a velocity \(v\). The emf induced across the conductor is

1 \(B_{0} l v\)
2 \(B_{0} l v \sin \delta\)
3 Zero
4 \(B_{0} l v / 2\)
PHXII06:ELECTROMAGNETIC INDUCTION

358487 A conducting loop being pulled out of magnetic field with a speed \(v\). Which of the following plots may represent the power delivered by the pulling agent as a function of the speed \(v\) ?
supporting img

1 \(a\)
2 \(b\)
3 \(c\)
4 \(d\)
PHXII06:ELECTROMAGNETIC INDUCTION

358488 A pair of long conducting rails are held vertical at a separation \({l=50 {~cm}}\). The top ends are connected by a resistance of \({R=0.5 \Omega}\) and a fuse \({(F)}\) of negligible resistance. A conducting rod is free to slide along the rails under gravity The whole system is in a uniform horizontal magnetic field \({B=1.5 {~T}}\) as shown. Resistance of the rod and rails are negligible and the rod remains horizontal as it moves. The rod is released from rest. Find the minimum mass of the rod that will ensure that the fuse blows out. It is known that rating of the fuse is 4 \(A\) .
supporting img

1 \(0.1\,kg\)
2 \(0.3\,kg\)
3 \(0.5\,kg\)
4 \(0.7\,kg\)
PHXII06:ELECTROMAGNETIC INDUCTION

358489 A conducting rod \({A B}\) of length \({l=1 {~m}}\) is moving at a velocity \({v=4 {~m} / {s}}\), making an angle \({30^{\circ}}\) with its length. If a uniform magnetic field \({B=2 T}\) exists in a direction perpendicular to the plane of motion, then
supporting img

1 \({V_{A}-V_{B}=8 V}\)
2 \({V_{A}-V_{B}=4 V}\)
3 \({V_{B}-V_{A}=8 V}\)
4 \({V_{B}-V_{A}=4 V}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358490 The magnitude of the earth's magnetic field at a place is \(B_{0}\) and the angle of dip is \(\delta\). A horizontal conductor of length \(l\) lying along the magnetic north-south moves eastwards with a velocity \(v\). The emf induced across the conductor is

1 \(B_{0} l v\)
2 \(B_{0} l v \sin \delta\)
3 Zero
4 \(B_{0} l v / 2\)
PHXII06:ELECTROMAGNETIC INDUCTION

358487 A conducting loop being pulled out of magnetic field with a speed \(v\). Which of the following plots may represent the power delivered by the pulling agent as a function of the speed \(v\) ?
supporting img

1 \(a\)
2 \(b\)
3 \(c\)
4 \(d\)
PHXII06:ELECTROMAGNETIC INDUCTION

358488 A pair of long conducting rails are held vertical at a separation \({l=50 {~cm}}\). The top ends are connected by a resistance of \({R=0.5 \Omega}\) and a fuse \({(F)}\) of negligible resistance. A conducting rod is free to slide along the rails under gravity The whole system is in a uniform horizontal magnetic field \({B=1.5 {~T}}\) as shown. Resistance of the rod and rails are negligible and the rod remains horizontal as it moves. The rod is released from rest. Find the minimum mass of the rod that will ensure that the fuse blows out. It is known that rating of the fuse is 4 \(A\) .
supporting img

1 \(0.1\,kg\)
2 \(0.3\,kg\)
3 \(0.5\,kg\)
4 \(0.7\,kg\)
PHXII06:ELECTROMAGNETIC INDUCTION

358489 A conducting rod \({A B}\) of length \({l=1 {~m}}\) is moving at a velocity \({v=4 {~m} / {s}}\), making an angle \({30^{\circ}}\) with its length. If a uniform magnetic field \({B=2 T}\) exists in a direction perpendicular to the plane of motion, then
supporting img

1 \({V_{A}-V_{B}=8 V}\)
2 \({V_{A}-V_{B}=4 V}\)
3 \({V_{B}-V_{A}=8 V}\)
4 \({V_{B}-V_{A}=4 V}\)
PHXII06:ELECTROMAGNETIC INDUCTION

358490 The magnitude of the earth's magnetic field at a place is \(B_{0}\) and the angle of dip is \(\delta\). A horizontal conductor of length \(l\) lying along the magnetic north-south moves eastwards with a velocity \(v\). The emf induced across the conductor is

1 \(B_{0} l v\)
2 \(B_{0} l v \sin \delta\)
3 Zero
4 \(B_{0} l v / 2\)