AP EAPCET 2024 - 22th May Evening Shift | Moving Charges and Magnetism Question 2 | Physics

Two infinite length wires carry currents 8 A and $6^{\mathrm{A}}$ respectively and are placed along $X$ and $Y$-axes respectively. Magnetic field at a point $P(0,0, C)$ will

$\frac{7 \mu_0}{\pi d}$

$\frac{10 \mu_0}{\pi d}$

$\frac{14 \mu_0}{\pi d}$

$\frac{5 \mu}{\pi d}$

AP EAPCET 2024 - 22th May Evening Shift

MCQ (Single Correct Answer)

-0

A short magnet oscillates with a time period 0.1 s at a place where horizontal magnetic field is $24 \mu \mathrm{~T}$. A downward current of 18 A is established in a vertical wire kept at a distance of 20 cm east of the magnet. The new time period of oscillations of the magnet is

0.1 s

0.089 s

0.076 s

0.057 s

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

Two toroids with number of turns 400 and 200 have average radii respectively 30 cm and 60 cm . If they carry the same current, the ratio of magnetic fields in these two toroids is

$2: 1$

$1: 4$

$2: 3$

$4: 1$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-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 4 English

zero

$(\sqrt{3}-1) \frac{\mu_0 I}{2 \pi r}$

$\sqrt{3} \frac{\mu_0 dl}{2 r}$

$\sqrt{2} \frac{\mu_0 l}{2 r}$

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