1
AP EAPCET 2024 - 22th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three rings, each with equal radius $r$ are placed mutually perpendicular to each other and each having centre at the origin of coordinate system. $I$ is current passing through each ring. The magnetic field value at the common centre is

AP EAPCET 2024 - 22th May Morning Shift Physics - Moving Charges and Magnetism Question 5 English

A
zero
B
$(\sqrt{3}-1) \frac{\mu_0 I}{2 \pi r}$
C
$\sqrt{3} \frac{\mu_0 dl}{2 r}$
D
$\sqrt{2} \frac{\mu_0 l}{2 r}$
2
AP EAPCET 2024 - 21th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A proton and an alpha particle moving with energies in the ratio $1: 4$ enter a uniform magnetic field of 3 T at right angles to the direction of magnetic field. The ratio of the magnetic forces acting on the proton and the alpha particle is
A
$1: 2$
B
$1: 4$
C
$2: 3$
D
$1: 3$
3
AP EAPCET 2024 - 21th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A charged particle moving along a straight line path enters a uniform magnetic field of 4 mT at right angles to the direction of the magnetic field. If the specific charge of the charged particle is $8 \times 10^7 \mathrm{C} \mathrm{kg}^{-1}$. The angular velocity of the particle in the magnetic field is
A
$64 \times 10^4 \mathrm{rad} \mathrm{s}^{-1}$
B
$32 \times 10^4 \mathrm{rad} \mathrm{s}^{-1}$
C
$16 \times 10^4 \mathrm{rad} \mathrm{s}^{-1}$
D
$48 \times 10^4 \mathrm{rad} \mathrm{s}^{-1}$
4
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
When an electron placed in a uniform magnetic field is accelerated from rest through a potential difference $V_1$. It experiences a force $F$. If the potential difference is changed to $V_2$, the force experienced by the electron in same magnetic field is $2 F$, then the ratio of potential differences $\frac{V_2}{V_1}$ is
A
$2: 1$
B
$1: 4$
C
$4: 1$
D
$1: 2$
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