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JEE PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT
1
Medium
1 of 1
Understanding
+4 | -1
A charged particle enters in a uniform
magnetic field with a certain velocity. The
power delivered to the particle by the magnetic
field depends on
magnetic field with a certain velocity. The
power delivered to the particle by the magnetic
field depends on
View answer and explanation
Correct option: D
None of these
Option D (None of these) is correct because the magnetic force does no work on a charged particle, and therefore the power delivered by the magnetic field is zero.
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Reason: Velocity of charge particle is not changing in magnetic field. Pick out the wrong statement : A steady current is flowing in a circular coil of radius , made up of a thin conducting wire. The magnetic field at the center of the loop is . Now, a circular loop of radius is made from the same wire without changing its length, by unfolding and refolding the loop, and the same current is passed through it. If new magnetic field at the center of the coil is , then the ratio is Lorentz force can be calculated by using the formula Two particles and having equal charges, after being accelerated through the same potential difference, enter a region of uniform magnetic field and describe circular path of radius and respectively. The ratio of mass of to that of is :
Reason: Velocity of charge particle is not changing in magnetic field. Pick out the wrong statement : A steady current is flowing in a circular coil of radius , made up of a thin conducting wire. The magnetic field at the center of the loop is . Now, a circular loop of radius is made from the same wire without changing its length, by unfolding and refolding the loop, and the same current is passed through it. If new magnetic field at the center of the coil is , then the ratio is Lorentz force can be calculated by using the formula Two particles and having equal charges, after being accelerated through the same potential difference, enter a region of uniform magnetic field and describe circular path of radius and respectively. The ratio of mass of to that of is :