Question

Stu wanted to calculate the resistance of a light bulb
connected to a 4.0-V battery, with a resulting current of
0.5 A. He used the formula R = VI and obtained an
answer of 2 . Was Stu's answer correct? How do you
know?

Answer 1

Answer:

yes

Explanation:

He used the formula R = VI and obtained an

answer of 2

Answer 2

Answer:

Stu's answer was incorrect. According to Ohm's law, R = V/I. This is the equation that should be used to obtain the correct answer, which is 8 ohms.

Explanation: