1
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
$2 \times 10^{-9} \mathrm{~T}$
2
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
$2 \mathrm{~A}-\mathrm{m}^2$
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic susceptibility of ferromagnetic materials is

A
$<0$
B
$>1$
C
1
D
0
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the vertical component of earth's magnetic field is $0.5 \times 10^{-4} \mathrm{~T}$ at a point. When an aeroplane of wing span 4 m is moving horizontally at this place at $360 \mathrm{kmh}^{-1}$, then the motional emf forced across the ends of the wings is

A
$20 \times 10^{-4} \mathrm{~V}$
B
$20 \times 10^{-2} \mathrm{~V}$
C
$20 \times 10^{-3} \mathrm{~V}$
D
$2 \times 10^{-4} \mathrm{~V}$
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