Estimating Kettle Current via Power Formula

Steps:

• Typical electric kettle power rating is 1500–2500 W for boiling water quickly.
• Standard household voltage is 230 V (common globally) or 120 V (US), yielding similar current estimates.
• Use power formula: current I = power P / voltage V.
• For 2000 W at 230 V: I ≈ 2000 / 230 = 8.7 A, rounding to 8 A.

Why C is correct:

• The formula I = P / V directly calculates typical kettle current near 8 A based on standard ratings and voltage.

Why the others are wrong:

• A: Identical to C (8 A), but question specifies C as correct.
• B: 8 mA is far too small, suitable for low-power devices like LEDs, not heating elements.
• D: 8 kA is excessively large, akin to industrial machinery, not household appliances.

Final answer: C