For a 1000W lamp, the paper amps rating is higher than the actual amps.

• A. True
• B. False
• C. Not applicable
• D. Both

Answer: (A)

At startup, a lamp draws more current than it does once it’s hot because the filament’s cold resistance is much lower than its hot resistance. The amperage rating printed on the lamp or its documentation is chosen as a safe maximum to cover both this startup surge and normal operation, plus tolerances. So the paper or label rating is higher than the actual steady-state current the lamp draws. For a 1000W lamp, the running current at a given voltage is I = P/V (for example, about 8.3 A at 120 V), while the label might accommodate a higher current to handle the inrush and protection margins. That’s why the statement is true.