Moving Charges and Magnetism Jee Exam 2025/2026 With 100% Correct Answers

Moving Charges and Magnetism Jee
Exam 2025/2026 With 100% Correct
Answers


Biot savart's law CORRECT ANSWERS dB=uo/4pi q(v x r)/r^3


dB= uo/4pi i(dl x r)/r^3


dB=uo/4pi idlsin/r^2


B due to current carrying straight wire
Finite wire CORRECT ANSWERS B=ui/4pid (costheta1 +
costheta2)


Semi infinite wire CORRECT ANSWERS
B=uoi/4pid(1+costheta2)


Infinite wire CORRECT ANSWERS B=uoi/2pid


B due to current carrying circular wire
Along axis CORRECT ANSWERS uoiR^2N/2(R^2 + X^2)^3/2

, N is number of turns


At center CORRECT ANSWERS uoiN/2R


At centre due to arc CORRECT ANSWERS uoi/2R x theta/2pi


B due to solenoid CORRECT ANSWERS B=uoNi
At the ends: uoNi/2


Toroid CORRECT ANSWERS B=uo N i/2piR


Ampere's Law CORRECT ANSWERS B x dl = uoi
Where I is the total current crossing the area bounded by closed
curve


Force on q moving in B CORRECT ANSWERS F = q(v x b)


Theta=0
Theta=90 CORRECT ANSWERS F=0