The discussion revolves around calculating the daily cost of operating a lamp based on its current draw and voltage, with a specified energy cost. Participants are attempting to compute the cost using the provided parameters.
There is ongoing discussion regarding the calculations, with participants noting discrepancies in their results. Some guidance on rounding and precision has been suggested, but no consensus has been reached on the correct final answer.
Participants are working under the constraint of needing to express their final answer to the nearest tenth, which has led to confusion regarding the calculations.
you did divide by 1000 W/kW, but the problem asks for the answer to the nearest tenth (nearest dime).GlobalDuty said:Homework Statement
Compute the cost per day of operating a lamp that draws a current of 1.90 A from a 110 V line. Assume the cost of energy from the power company is $0.0620 / kWh. NOTE: Enter your response with tenths precision.
The Attempt at a Solution
1.90*110V*.0620*24 = .310992
but this answer is wrong
GlobalDuty said:yeah i divided by 1000 at the end, but .3 is wrong