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ch4aika [34]
2 years ago
3

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?
Physics
2 answers:
Fiesta28 [93]2 years ago
6 0

Answer: no, Stu's answer was incorrect.

Explanation:

The correct formula that relates current, resistance and voltage in a circuit is given by Ohm's law:

V=RI

or

R=\frac{V}{I}

where

V is the voltage in the circuit

I is the current

R is the resistance

In this circuit, the voltage is V=4.0 V, and the current is I=0.5 A, therefore the resistance of the circuit is

R=\frac{V}{I}=\frac{4.0 V}{0.5 A}=8 \Omega

maksim [4K]2 years ago
6 0

Sample Response: 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.

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Answer:

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Explanation:

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