× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
T
3
s
3
o
3
G
3
k
3
C
3
a
3
K
3
f
3
j
3
b
3
c
3
New Topic  
fireedwin fireedwin
wrote...
Posts: 39
Rep: 2 0
11 years ago
Maria is designing a voltage divider using a 30-V battery and a 375 ohms resistor as Rb. What resistor should be used as Ra if the output voltage across RB is to be a 22.5 V?
*Ra and Rb are both resistors
Read 713 times
2 Replies

Related Topics

Replies
wrote...
11 years ago
30V*Rb/(Ra+Rb) = 22.5V

Solve for Rb
wrote...
11 years ago
30 - 22.5 = 7.5V.
22.5/7.5 = 3:1.
375/3 = 125 ohms.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  874 People Browsing
Related Images
  
 229
  
 302
  
 302
Your Opinion
Who will win the 2024 president election?
Votes: 19
Closes: November 4