1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
The variation of susceptibility $$(\chi)$$ with absolute temperature ( $$\mathrm{T}$$ ) for a paramagnetic material is represented as :
A
B
C
D
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
A big circular coil of 1000 turns and average radius 10 m is rotating about its horizontal diameter at 2 rad s$$-$$1. If the vertical component of earth's magnetic field at that place is 2 $$\times$$ 10$$-$$5 T and electrical resistance of the coil is 12.56 $$\Omega$$, then the maximum induced current in the coil will be
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
In the product
$$\overrightarrow F = q\left( {\overrightarrow v \times \overrightarrow B } \right)$$
$$ = q\overrightarrow v \times \left( {B\widehat i + B\widehat j + {B_0}\widehat k} \right)$$
For q = 1 and $$\overrightarrow v = 2\widehat i + 4\widehat j + 6\widehat k$$ and $$\overrightarrow F = 4\widehat i - 20\widehat j + 12\widehat k$$
What will be the complete expression for $$\overrightarrow B $$ ?
$$\overrightarrow F = q\left( {\overrightarrow v \times \overrightarrow B } \right)$$
$$ = q\overrightarrow v \times \left( {B\widehat i + B\widehat j + {B_0}\widehat k} \right)$$
For q = 1 and $$\overrightarrow v = 2\widehat i + 4\widehat j + 6\widehat k$$ and $$\overrightarrow F = 4\widehat i - 20\widehat j + 12\widehat k$$
What will be the complete expression for $$\overrightarrow B $$ ?
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A uniform conducting wire of length 12a and resistance 'R' is wound up as a current carrying coil in the shape of ,
(i) an equilateral tringle of side 'a'
(ii) A square of side 'a'
The magnetic dipole moments of the coil in each case respectively are :
(i) an equilateral tringle of side 'a'
(ii) A square of side 'a'
The magnetic dipole moments of the coil in each case respectively are :
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