A moving coil galvanometer has a coil with 175 turns and area 1 cm2. It uses a torsion band of torsion band constant 
N-m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 10 for a current of 1 mA. The value of B (in Tesla) is approximately
(a)
10−4
(b)
10−2
(c)
10−1
(d)
10−3
A moving coil galvanometer has a coil with 175 turns and area 1 cm2. It uses a torsion band of torsion band constant N-m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 10 for a current of 1 mA. The value of B (in Tesla) is approximately
(a)
10−4
(b)
10−2
(c)
10−1
(d)
10−3
Question ID - 51298 | SaraNextGen Top Answer
A moving coil galvanometer has a coil with 175 turns and area 1 cm2. It uses a torsion band of torsion band constant N-m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 10 for a current of 1 mA. The value of B (in Tesla) is approximately
(a)
10−4
(b)
10−2
(c)
10−1
(d)
10−3
|
A moving coil galvanometer has a coil with 175 turns and area 1 cm2. It uses a torsion band of torsion band constant |
|||
|
(a) |
10−4 |
(b) |
10−2 |
|
(c) |
10−1 |
(d) |
10−3 |
1 Answer
127 votes
Answer Key / Explanation : (d) -
NIAB=KQ
175
1
10−3
1
10−4
B=
B=
9.97
10−4 T.
B=10−3 T.
127 votes
Answer Link
127