Physics Discuss

The energy stored in a capacitor of capacitance 5F is 40J. Calculate the...

Share to WhatsApp
Question 307
A
4000V
B
200V
C
16V
D
6V
E
4V
Explanation

\(E = \frac{CV^{2}}{2}\)

\(V^{2} = \frac{2E}{C}\)

\(V^{2} = \frac{2\times 40}{5 \times 10^{-6}}\)

\(V^{2} = 16 \times 10^{6}\)

\(V = 4 \times 10^{3} = 4000v\)


Correct option: A

Try this quiz in in E-test/CBT Mode
switch to Physics in CBT Mode

Previous Question Next Question

Be the first to Comment on this

Sign in to post a comment


Question Map
Quiz link
Share Physics with your audience
Share to WhatsApp CBT mode Study mode copy link
​​​Help keep QUIZZERWEB running! 
A donation makes a contribution towards the costs, the time and effort that's going on in building and improving this platform.
 
Donate
​​​sponsored
Are you a writer, proof-reader, interpreter, teacher, student or just someone who works in Yorùbá Language? 
 
Translate those figures and numbers to words in standard Yoruba Language at YorubaNumeral.com.ng at no cost. 
 
It also aids learning the yoruba numbering system by providing detailed explanation for each number translated up to 25 billion. 
 
English to Yorùbá Numeral Translator