Magnetic Force
PHXII04:MOVING CHARGES AND MAGNETISM

362733 A charge ' \(q\) ' moves in a region where electric field and magnetic field both exist, then force on it :-

1 \(q \vec{E}+q(\vec{v} \times \vec{B})\)
2 \(q(\vec{v} \times \vec{B})\)
3 \(q \vec{B}+q(\vec{E} \times \vec{v})\)
4 \(q \vec{E}+q(\vec{B} \times \vec{v})\)
PHXII04:MOVING CHARGES AND MAGNETISM

362734 In the product
\(\vec{F}=q(\vec{v} \times \vec{B})=q \vec{v} \times\left(B \hat{i} \times B \hat{j} \times B_{0} \hat{k}\right)\)
For \(q=1\) and \(\vec{v}=2 \hat{i}+4 \hat{j}+6 \hat{k}\) and
\(\vec{F}=4 \hat{i}-20 \hat{j}+12 \hat{k}\)
What will be the complete expression for \(\vec{B}\) ?

1 \(-6 \hat{i}-6 \vec{j}-8 \hat{k}\)
2 \(8\hat i + 8\vec j - 6\hat k\)
3 \(6 \hat{i}+6 \hat{j}-8 \hat{k}\)
4 \( - 8\hat i - 8\vec j - 6\hat k\)
PHXII04:MOVING CHARGES AND MAGNETISM

362735 Assertion :
A moving charge produces a magnetic field.
Reason :
Magnetic field interacts with a moving charge and not with a stationary charge.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362736 Assertion :
A stationary charged particle in a magnetic field does not experience a force.
Reason :
The force acting on a charged particle does not depend on velocity of the particle.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362733 A charge ' \(q\) ' moves in a region where electric field and magnetic field both exist, then force on it :-

1 \(q \vec{E}+q(\vec{v} \times \vec{B})\)
2 \(q(\vec{v} \times \vec{B})\)
3 \(q \vec{B}+q(\vec{E} \times \vec{v})\)
4 \(q \vec{E}+q(\vec{B} \times \vec{v})\)
PHXII04:MOVING CHARGES AND MAGNETISM

362734 In the product
\(\vec{F}=q(\vec{v} \times \vec{B})=q \vec{v} \times\left(B \hat{i} \times B \hat{j} \times B_{0} \hat{k}\right)\)
For \(q=1\) and \(\vec{v}=2 \hat{i}+4 \hat{j}+6 \hat{k}\) and
\(\vec{F}=4 \hat{i}-20 \hat{j}+12 \hat{k}\)
What will be the complete expression for \(\vec{B}\) ?

1 \(-6 \hat{i}-6 \vec{j}-8 \hat{k}\)
2 \(8\hat i + 8\vec j - 6\hat k\)
3 \(6 \hat{i}+6 \hat{j}-8 \hat{k}\)
4 \( - 8\hat i - 8\vec j - 6\hat k\)
PHXII04:MOVING CHARGES AND MAGNETISM

362735 Assertion :
A moving charge produces a magnetic field.
Reason :
Magnetic field interacts with a moving charge and not with a stationary charge.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362736 Assertion :
A stationary charged particle in a magnetic field does not experience a force.
Reason :
The force acting on a charged particle does not depend on velocity of the particle.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362733 A charge ' \(q\) ' moves in a region where electric field and magnetic field both exist, then force on it :-

1 \(q \vec{E}+q(\vec{v} \times \vec{B})\)
2 \(q(\vec{v} \times \vec{B})\)
3 \(q \vec{B}+q(\vec{E} \times \vec{v})\)
4 \(q \vec{E}+q(\vec{B} \times \vec{v})\)
PHXII04:MOVING CHARGES AND MAGNETISM

362734 In the product
\(\vec{F}=q(\vec{v} \times \vec{B})=q \vec{v} \times\left(B \hat{i} \times B \hat{j} \times B_{0} \hat{k}\right)\)
For \(q=1\) and \(\vec{v}=2 \hat{i}+4 \hat{j}+6 \hat{k}\) and
\(\vec{F}=4 \hat{i}-20 \hat{j}+12 \hat{k}\)
What will be the complete expression for \(\vec{B}\) ?

1 \(-6 \hat{i}-6 \vec{j}-8 \hat{k}\)
2 \(8\hat i + 8\vec j - 6\hat k\)
3 \(6 \hat{i}+6 \hat{j}-8 \hat{k}\)
4 \( - 8\hat i - 8\vec j - 6\hat k\)
PHXII04:MOVING CHARGES AND MAGNETISM

362735 Assertion :
A moving charge produces a magnetic field.
Reason :
Magnetic field interacts with a moving charge and not with a stationary charge.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362736 Assertion :
A stationary charged particle in a magnetic field does not experience a force.
Reason :
The force acting on a charged particle does not depend on velocity of the particle.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362733 A charge ' \(q\) ' moves in a region where electric field and magnetic field both exist, then force on it :-

1 \(q \vec{E}+q(\vec{v} \times \vec{B})\)
2 \(q(\vec{v} \times \vec{B})\)
3 \(q \vec{B}+q(\vec{E} \times \vec{v})\)
4 \(q \vec{E}+q(\vec{B} \times \vec{v})\)
PHXII04:MOVING CHARGES AND MAGNETISM

362734 In the product
\(\vec{F}=q(\vec{v} \times \vec{B})=q \vec{v} \times\left(B \hat{i} \times B \hat{j} \times B_{0} \hat{k}\right)\)
For \(q=1\) and \(\vec{v}=2 \hat{i}+4 \hat{j}+6 \hat{k}\) and
\(\vec{F}=4 \hat{i}-20 \hat{j}+12 \hat{k}\)
What will be the complete expression for \(\vec{B}\) ?

1 \(-6 \hat{i}-6 \vec{j}-8 \hat{k}\)
2 \(8\hat i + 8\vec j - 6\hat k\)
3 \(6 \hat{i}+6 \hat{j}-8 \hat{k}\)
4 \( - 8\hat i - 8\vec j - 6\hat k\)
PHXII04:MOVING CHARGES AND MAGNETISM

362735 Assertion :
A moving charge produces a magnetic field.
Reason :
Magnetic field interacts with a moving charge and not with a stationary charge.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII04:MOVING CHARGES AND MAGNETISM

362736 Assertion :
A stationary charged particle in a magnetic field does not experience a force.
Reason :
The force acting on a charged particle does not depend on velocity of the particle.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.