Question

technician a says power is the rate at which work is performed. technician b says 1 watt is produced when 12 volts cause 1 amp of current to flow. who is correct? select one: a. technician a b. technician b c. both techs a and b d. neither technician a nor b

Explanation:

• For Technician A:
• Power \(P\) is defined as the rate of doing work. The formula \(P=\frac{W}{t}\) (where \(W\) is work and \(t\) is time) shows that power measures how quickly work is performed. So, Technician A is correct.
• For Technician B:
• The formula for electrical power is \(P = VI\) (where \(V\) is voltage and \(I\) is current). When \(V = 1\) volt and \(I=1\) amp, \(P=(1\space V)\times(1\space A) = 1\space W\). But when \(V = 12\) volts and \(I = 1\) amp, \(P=(12\space V)\times(1\space A)=12\space W\). So, Technician B is incorrect.

Answer:

a. Technician A