A light bulb

We want to connect a 2.5 V, 0.3 A light bulb to a flat battery. How much resistance and how do we need to connect to the light bulb?

Correct answer:

R =  6.6667 Ω

Step-by-step explanation:

U1=2.5 V U2=4.5 V I=0.3 A  U=U2U1=4.52.5=2 V I = U/R  R=IU=0.32=6.6667 Ω

Did you find an error or inaccuracy? Feel free to write us. Thank you!

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: