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Does the speed, or kinetic energy, of a charged particle moving in a uniform magnetic field change? Does the momentum of the particle change? Does the kinetic energy of the particle change when moving in an electric field?

Important Questions on Moving Charges and Magnetic Field

MEDIUM
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 28
A charged particle enters a (non-uniform) magnetic field varying from point-to-point both in magnitude and direction, with a certain initial velocity. What can you say about the final velocity of the particle when it leaves the field?
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12th ICSE
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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 29
The net charge in a current-carrying conductor is zero, even then it experiences force in a magnetic field. Why?
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12th ICSE
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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 30
Free electrons always keep on moving in a conductor. Even then, no magnetic force acts on them in a magnetic field unless a current is passed through it. Why?
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12th ICSE
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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 31

Two long, parallel, wires are hanging freely. If they are connected to a battery in series? What would be effect on their position?

 

MEDIUM
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 31

Two long, parallel, wires are hanging freely. If they are connected to a battery in parallel, what would be the effect on their positions?

 

HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 32

In the given figure, a long, straight current-carrying wire AB is fixed, while the rectangular current-loop is free to move. In which direction would the loop move? Explain with
reason.

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12th ICSE
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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 33
A body is suspended from the lower end of a vertical spring. What shall be the effect on the position of the body when a current is sent through the spring? Does it depend upon the direction of current in the spring?
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12th ICSE
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NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 7 - Moving Charges and Magnetic Field>QUESTIONS>Q 34
If the current flowing in the spring be alternating, then?