Question

two infinitely long insulated wires are kept perpendicular to each other they carry currents i1 2 ampere and I2 1.5 ampere find the magnitude and direction of the magnetic field

Answer 1

I hope you understand

Answer 2

Answer:

The magnitude and direction of magnetic field is $\bold{2 \times 10^{-5}}$

Explanation:

Both direction and magnitude is present in magnetic fields for a current carrying conductor the magnetic fields will be in circular loops.  

The formula to find the magnitude and direction of magnetic field will be

$\mathrm{B} 1=\frac{\mu_{0} i 1}{2 \pi r 1}=\frac{4 \pi \times 10^{-7} \times 2}{2 \pi \times 4 \times 10^{-2}}=10^{-5}$

Similarly we can find $\mathrm{B} 2=\frac{\mu_{0} i 2}{2 \pi r 2}=\frac{4 \pi \times 10^{-7} \times 2}{2 \pi \times 4 \times 10^{-2}}=10^{-5}$

The total magnitude of B =B1+B2 = $2 \times 10^{-5}$