A galvanometer coil has 500 turns and each turn has an average area of 3 × 10 - 4 m 2 . If a torque of 1 . 5   Nm is required to keep this coil parallel to a magnetic field when a current of 0 . 5 A is flowing through it, the strength of the field (in T ) is _________ .

Question

A galvanometer coil has 500 turns and each turn has an average area of 3 &#215; 10 - 4 m 2 . If a torque of 1 . 5 &#160; Nm is required to keep this coil parallel to a magnetic field when a current of 0 . 5 A is flowing through it, the strength of the field (in T ) is _________ .

Aicharya · Accepted Answer

&#964; = M &#8594; &#215; B &#8594; = NiAB &#160; sin 90 &#176; = NiAB = Ni &#160; S &#160; B &#8658; &#160; &#160; &#160; B = &#964; NiS = 1 . 5 500 &#215; 0 . 5 &#215; 3 &#215; 10 - 4 = 20

A galvanometer coil has 500 turns and each turn has an average area of 3 × 10 - 4 m 2 . If a torque of…

Solution

A galvanometer coil has 500 turns and each turn has an average area of 3 &#215; 10 - 4 m 2 . If a torque of…

Solution

A galvanometer coil has 500 turns and each turn has an average area of 3 × 10 - 4 m 2 . If a torque of…