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1
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Torque acting on a rectangular coil carrying current ' $l$ ' situated parallel to magnetic field of induction ' $B$ ', having number of turns ' $n$ ' and area ' $A$ ' is

A
$n i(\hat{A} \cdot \hat{B})$
B
$\frac{n B A}{i}$
C
$n i(\mathbf{A} \times \mathbf{B})$
D
$\frac{i B A}{n}$
2
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A circular coil of wire consisting of 100 turns each of radius 9 cm carries a current of 0.4 A . The magnitude of the magnetic field at the centre of coil is $\left[\mu_0=12.56 \times 10^{-7} \mathrm{SI}\right.$ Unit]

A
$2.4 \times 10^{-11} \mathrm{~T}$
B
$2.79 \times 10^{-5} \mathrm{~T}$
C
$2.79 \times 10^{-4} \mathrm{~T}$
D
$2.79 \times 10^{-3} \mathrm{~T}$
3
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic dipole moment of a short magnetic dipole at a distant point along the equator of magnet has a magnitude of ' $X$ ' in SI units. If the distance between the point and the magnet is halved then the magnitude of dipole moment will be

A
$2 x$
B
$\frac{1}{2} x$
C
$X$
D
$\frac{1}{8} x$
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two parallel conductors carrying unequal currents in the same direction ............

A
neither attract nor repel each other
B
repel each other
C
attract each other
D
will have rotational motion.
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