$(A)$ Magnetic flux density,$B = 1.5 \,Wb \,m^{-2}$ Velocity of proton,$v = 2 \times 10^7 \,ms^{-1}$ Angle,$\theta = 30^{\circ}$ Charge on proton,$q =

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$(A)$ Magnetic flux density,$B = 1.5 \,Wb \,m^{-2}$ Velocity of proton,$v = 2 \times 10^7 \,ms^{-1}$ Angle,$\theta = 30^{\circ}$ Charge on proton,$q = 1.6 \times 10^{-19} \,C$ The magnetic force $F$ on a moving charge is given by $F = Bqv \sin \theta$. Substituting the values: $F = (1.5) \times (1.6 \times 10^{-19}) \times (2 \times 10^7) \times \sin 30^{\circ}$ $F = 1.5 \times 1.6 \times 2 \times 10^{-12} \times 0.5$ $F = 4.8 \times 0.5 \times 10^{-12} \,N$ $F = 2.4 \times 10^{-12} \,N$

Class 12 Physics Moving Charges and Magnetism Motion of Charged Particle In Magnetic Field

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$A$ proton enters a magnetic field of flux density $1.5 \,Wb \,m^{-2}$ with a velocity of $2 \times 10^7 \,ms^{-1}$ at an angle of $30^{\circ}$ with the field. The force on the proton will be

AP EAMCET 2020 All AP EAMCET

A
$2.4 \times 10^{-12} \,N$
B
$24 \times 10^{-12} \,N$
C
$0.24 \times 10^{-12} \,N$
D
$0.024 \times 10^{-12} \,N$

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Moving Charges and Magnetism

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Motion of Charged Particle In Magnetic Field

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$A$ particle of charge $q$,mass $m$ and kinetic energy $E$ enters a magnetic field perpendicular to its velocity and undergoes a circular arc of radius $r$. Which of the following curves represents the variation of $r$ with $E$?

DifficultJEE MAIN 2025

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$A$ proton enters a magnetic field of flux density $1.5 \,Wb \,m^{-2}$ with a velocity of $2 \times 10^7 \,ms^{-1}$ at an angle of $30^{\circ}$ with the field. The force on the proton will be

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$A$ proton moving with a constant velocity passes through a region of space without any change in its velocity. If $E$ and $B$ represent the electric and magnetic fields respectively,this region may have:

As shown in the figure,the uniform magnetic field between the two identical plates is $B$. There is a hole in the bottom plate. If a particle of charge $q$,mass $m$,and energy $E$ enters this magnetic field through this hole,then the particle will not collide with the upper plate provided:

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