Author Question: A light bulb operating at a dc voltage of 120 V has a resistance of 200 . How much power is ... (Read 70 times)

humphriesbr@me.com · **on:** Jul 29, 2018

A light bulb operating at a dc voltage of 120 V has a resistance of 200 . How much power is dissipated in this bulb?

A) 100 W
B) 60 W
C) 72 W
D) 14 mW
E) 7.2 W

Question 2

A long wire carrying a 2.0-A current is placed along the y-axis. What is the magnitude of the magnetic field at a point that is 0.60 m from the origin along the x-axis? (0 = 4 10-7 T m/A)

A) 6.7 T B) 0.67 T C) 0.12 T D) 1.3 T E) 12 T