An x-ray beam with wavelength 0.230 nm is directed at a crystal. as the angle of incidence increases, you observe the first strong interference maximum at an angle 22.5 ∘. what is the spacing d between the planes of the crystal?

if i understood you you wish to calculate power from voltage and current.

we have voltage of 220 volts and current of 5.3 amperes. the power is equal to the product of voltage and current.

where p is power, u is voltage and i is current.

so,

hope this .

r3t40