Question 218Electricity & Electronics - QMED
70% to passWhat is the wattage of a heating element drawing a current of 30 amperes, at 120 volts?
A30 watts
B99.97 watts
C360 watts
D3600 watts
AI Explanation
The correct answer is D) 3600 watts. The formula for calculating the power (in watts) of an electrical device is: Power (watts) = Voltage (volts) x Current (amperes). In this case, the voltage is 120 volts and the current is 30 amperes. Plugging these values into the formula, we get: Power = 120 volts x 30 amperes = 3600 watts. The other options are incorrect because they do not correctly apply the power formula. Option A) 30 watts is too low, Option B) 99.97 watts is incorrect, and Option C) 360 watts is also incorrect.
Related Questions
Q166:What practice could potentially damage a multimeter? Q247:Which of the following statements describes what will happen when both the polar... Q48:Which of the following voltage testers would be associated with high quality, be... Q180:When paralleling two AC generators, the synchroscope selector switch and frequen... Q394:Autotransformer starters, sometimes called starting compensators, are sometimes ...
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources