Author Question: A toaster is rated at 800 W when operating at 120 V dc. What is the resistance of its heating ... (Read 78 times)

kshipps · **on:** Jul 29, 2018

A toaster is rated at 800 W when operating at 120 V dc. What is the resistance of its heating element?

A) 16
B) 18
C) 6.7
D) 0.15

Question 2

A star has absolute luminosity equal to that of the sun but is 10 pc away from the Earth.

By what factor will it appear dimmer than the sun? The earth is 1.5 108 km from the sun, and 1 parsec is equal to 3.09 1016 m.
A) 2 10-9 B) 2 10-11 C) 2 10-15
D) 2 10-13