1
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A particle of charge 2 C is moving with a velocity of $(3 \hat{\mathbf{i}}+4 \hat{\mathrm{j}}) \mathrm{ms}^{-1}$ in the presence of magnetic and electric fields. If the magnetic field is $(\hat{\mathbf{i}}+2 \hat{\mathbf{j}}+3 \hat{\mathbf{k}}) \mathrm{T}$ and the electric field is $(-2 \hat{\mathbf{k}}) \mathrm{NC}^{-1}$, then the Lorentz force on the particle is
A
50 N
B
20 N
C
30 N
D
40 N
2
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A rectangular coil of 400 turns and $10^{-2} \mathrm{~m}^2$ area, carrying a current of 0.5 A is placed in a uniform magnetic field of IT such that the plane of the coil makes an angle of $60^{\circ}$ with the direction of the magnetic field. The initial moment of force acting on the coil in $\mathrm{N}-\mathrm{m}$ is
A
$\sqrt{3}$
B
$1 / \sqrt{3}$
C
1
D
$\sqrt{3} / 2$
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic field at a perpendicular distance of one metre from a wire carrying current of 1 A is

A
$2 \times 10^{-7} \mathrm{~T}$
B
$2 \times 10^{-8} \mathrm{~T}$
C
$2 \times 10^{-6} \mathrm{~T}$
D
$2 \times 10^{-9} \mathrm{~T}$
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A circular coil of area $2 \mathrm{~cm}^2$ has 1000 turns. If the current through the coil is 1 A , then its magnetic moment is

A
$4 \mathrm{~A}-\mathrm{m}^2$
B
$0.2 \mathrm{~A}-\mathrm{m}^2$
C
$0.4 \mathrm{~A}-\mathrm{m}^2$
D
$2 \mathrm{~A}-\mathrm{m}^2$
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