MEDIUM
12th CBSE
IMPORTANT
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An electron is projected with uniform velocity along the axis of a current carrying long solenoid. Which of the following is true?

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Important Questions on Moving Charges and Magnetism

EASY
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.5
In a cyclotron, a charged particle
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.6
A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field B. The work done to rotate the loop by 30° about an axis perpendicular to its plane is
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.7
The gyromagnetic ratio of an electron in an H-atom, according to Bohr model, is
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.8
Consider a wire carrying a steady current, I placed in a uniform magnetic field B perpendicular to its length. Consider the charges inside the wire. It is known that magnetic forces do no work. This implies that,
MEDIUM
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.9
Two identical current carrying coaxial loops, carry current I in an opposite sense. A simple amperian loop passes through both of them once. Calling the loop as C,
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.1
A cubical region of space is filled with some uniform electric and magnetic fields. An electron enters the cube across one of its faces with velocity v and a positron enters via opposite face with velocity - v. At this instant,
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>MCQ>Q 4.11
A charged particle would continue to move with a constant velocity in a region wherein,
HARD
12th CBSE
IMPORTANT
NCERT Exemplar Physics - Class 12>Chapter 4 - Moving Charges and Magnetism>VSA>Q 4.12
Verify that the cyclotron frequency ω=e B/m has the correct dimensions of [T]-1