Use the electrical power formula for a resistive coil

Steps:

• Convert the power rating to watts: P = 2 kW = 2000 W.
• Identify the resistance of the coil: R = 5 Ω.
• Apply the formula P = I²R and rearrange to solve for current: I = √(P / R).
• Compute I = √(2000 / 5) = √400 = 20 A.

Why none of the options is correct:

• The calculated current using P = I²R is 20 A, which does not match any choice; the options appear inconsistent with the given data.

Why the others are wrong:

• A is too low; it corresponds to P ≈ 0.8 W.
• B is too low; it corresponds to P ≈ 3.4 W.
• C is too low; it corresponds to P ≈ 12.8 W.
• D is too low; it corresponds to P ≈ 31.3 W.

Final answer: None (20 A)