Answer:
5 x 10⁻⁵ T
Explanation:
Magnetic field at a point d distance away from a current carrying wire having current of I
B = 10⁻⁷ x 2I / d
Here magnetic field due to current of 20 A
B₁ = 10⁻⁷ x 2 x 20 / 10 x 10⁻²
= 4 x 10⁻⁵ T .
Here magnetic field due to current of 5 A
B₂ = 10⁻⁷ x 2 x 5 / 10 x 10⁻²
= 10⁻⁵ T .
These magnetic fields are acting in the same direction
Total magnetic field
B = B₁ + B₂
= 4 x 10⁻⁵ + 10⁻⁵ = 5 x 10⁻⁵ T .
