SK0-004 · Question #838
A technician is sizing a blade server that requires 220 VAC drawing 5 amps. Which of the following is the power consumed in watts?
The correct answer is C. 1100. Electrical power in watts is calculated by multiplying voltage by current using the formula P = V x I, so a server drawing 5 amps at 220 volts consumes 1100 watts.
Question
A technician is sizing a blade server that requires 220 VAC drawing 5 amps. Which of the following is the power consumed in watts?
Options
- A44
- B225
- C1100
- D2500
How the community answered
(20 responses)- A5% (1)
- C90% (18)
- D5% (1)
Why each option
Electrical power in watts is calculated by multiplying voltage by current using the formula P = V x I, so a server drawing 5 amps at 220 volts consumes 1100 watts.
44 results from dividing voltage by current (220 / 5 = 44), which calculates resistance in ohms using Ohm's law (R = V / I) rather than power.
225 results from adding voltage and current (220 + 5 = 225), which does not correspond to any valid electrical formula for calculating power, resistance, or current.
Using the electrical power formula P = V x I, where P is power in watts, V is voltage in volts, and I is current in amperes: 220V x 5A = 1100 watts. This formula is fundamental to sizing power infrastructure, PDUs, and UPS systems for server hardware.
2500 does not result from any correct application of standard electrical power formulas (P = V x I, P = I squared x R, or P = V squared / R) using the given values of 220V and 5A.
Concept tested: Electrical power consumption calculation using P equals V times I
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