TG EAPCET 2024 (Online) 10th May Evening Shift | Moving Charges and Magnetism Question 4 | Physics

Two long straight parallel wires $A$ and $B$ separated by 5 m carry currents 2 A and 6 A respectively in the same direction. The resultant magnetic field due to the two wires at a point of 2 m distance from the wire $A$ in between the two wires is

$2 \times 10^{-6} \mathrm{~T}$

$2 \times 10^{-7} \mathrm{~T}$

$4 \times 10^{-7} \mathrm{~T}$

$4 \times 10^{-6} \mathrm{~T}$

TG EAPCET 2024 (Online) 10th May Morning Shift

MCQ (Single Correct Answer)

-0

A long straight rod of diameter 4 mm carries a steady current $i$. The current is uniformly distributed across its cross-section. The ratio of the magnetic fields at distances 1 mm and 4 mm from the axis of the rod is

$1: 2$

$1: 4$

$4: 1$

$1: 1$

TG EAPCET 2024 (Online) 10th May Morning Shift

MCQ (Single Correct Answer)

-0

A straight wire of length 20 cm carrying a current of $\frac{3 .}{\pi^2} \mathrm{~A}$ is bent in the form of a circle. The magnetic field at the centre of the circle is

$3 \times 10^{-6} \mathrm{~T}$

$8 \times 10^{-6} \mathrm{~T}$

$12 \times 10^{-6} \mathrm{~T}$

$6 \times 10^{-6} \mathrm{~T}$

TG EAPCET 2024 (Online) 10th May Morning Shift

MCQ (Single Correct Answer)

-0

A circular coil carrying a current of 2.5 A is free to rotate about an axis in its plane perpendicular to an external field. When the coil is made to oscillate, the time period of oscillation is $T$. If the current through the coil is 10 A , the time period of oscillation is

$\frac{T}{2}$

$T$

$2 T$

$\frac{T}{4}$

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