A uniform electric field of magnitude 273 V/m is directed in the positive x-direction. Suppose a 24 µC charge moves from the origin to point A at the coordinates, (38 cm, 56 cm). What is the absolute value of the change in potential from the origin to point A? Answer in units of V.

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.