A wire of mass 100 g, length 1 m and current 5 A is balanced in mid air by a magnetic field B, then find the value of B.

Question

A wire of mass 100 g, length 1 m and current 5 A is balanced in mid air by a magnetic field B, then find the value of B. (A) 0.2 T (B) 0.1 T (C) 0.5 T (D) 0.6 T

Tardigrade Admin · Accepted Answer

Here,m = 100 g = 10-1 kg, l = 1 m, I = 5 A For a wire balanced midway air by a magnetic field is mg = IlB. or B=(mg/Il) =(10-1×10/5×1) B = 0.2 T.

Q. A wire of mass 100 g, length 1 m and current 5 A is balanced in mid air by a magnetic field B, then find the value of B.

0.2 T

0.1 T

0.5 T

0.6 T

Here,m = 100 g = 10^-1 kg, l = 1 m, I = 5 A
For a wire balanced midway air by a magnetic field is
mg = IlB.
or $B = \frac{m g}{I l}$
$= \frac{1 0 ^{- 1} \times 10}{5 \times 1}$
B = 0.2 T.

Q. A wire of mass 100 g, length 1 m and current 5 A is balanced in mid air by a magnetic field B, then find the value of B.

0.2 T

0.1 T

0.5 T

0.6 T

Here,m = 100 g = 10-1 kg, l = 1 m, I = 5 A For a wire balanced midway air by a magnetic field is mg = IlB. or B=Ilmg​ =5×110−1×10​ B = 0.2 T.

Here,m = 100 g = 10^-1 kg, l = 1 m, I = 5 A
For a wire balanced midway air by a magnetic field is
mg = IlB.
or $B = \frac{m g}{I l}$
$= \frac{1 0 ^{- 1} \times 10}{5 \times 1}$
B = 0.2 T.