The value of R3 is A) 10 Ω
Answer:
energy? or power? I'm not really sure but using the quizzes app really help with science problems
The Ammeter is used to detect and measure current or amperage. Also a more common tool now used is a multimeter that detects and measures voltage, current, and resistance.
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Answer:
25000 V
Explanation:
The formula for potential is
V = Kq/r
Potential at B due to the charge placed at origin O
V1 = K q / OB
![V_{1}= \frac{9 \times 10^{9} \times 30 \times 10^{-6}}{27}](https://tex.z-dn.net/?f=V_%7B1%7D%3D%20%5Cfrac%7B9%20%5Ctimes%2010%5E%7B9%7D%20%5Ctimes%2030%20%5Ctimes%2010%5E%7B-6%7D%7D%7B27%7D)
V1 = 10000 V
Potential at B due to the charge placed at A
V2 = K q / AB
![V_{2}= \frac{9 \times 10^{9} \times 30 \times 10^{-6}}{18}](https://tex.z-dn.net/?f=V_%7B2%7D%3D%20%5Cfrac%7B9%20%5Ctimes%2010%5E%7B9%7D%20%5Ctimes%2030%20%5Ctimes%2010%5E%7B-6%7D%7D%7B18%7D)
V2 = 15000 V
Total potential at B
V = V1 + V2 = 10000 + 15000 = 25000 V