A light bulb in a battery powered desk lamp has a current of 0.042 A and is connected to a 9.2 V battery. What is the resistance in the desk lamp?

A

Explanation:

219 Ohms, C

Explanation:

To find the resistance, you can use Ohm's Law:

Where V is the voltage, I is the current, and R is the resistance.

Solving for R gives us around 219 Ω.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west