Email
Chat with tutor
logo

Ask Questions, Get Answers

X
 
Questions  >>  EAMCET  >>  Physics
Answer
Comment
Share
Q)

A battery of emf 'E' and internal resistance 'r' is connected to a resistor of resistance $'r_1'$ and Q Joules of heat is produced in a certain time 't'. When the same battery is connected to another resistor of resistance $'r_2'$ the same quantity of heat is produced in the same time 't'. Then, the value of 'r' is :

$\begin {array} {1 1} (1)\;\large\frac{r_2^2}{r_1} & \quad (2)\;\large\frac{1}{2}(r_1+r_2) \\ (3)\;\sqrt{r_1r_2} & \quad (4)\;\large\frac{r_1^2}{r_2} \end {array}$

1 Answer

Comment
A)
(3) $ \sqrt{r_1r_2}$
Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
Clay6 tutors use Telegram* chat app to help students with their questions and doubts.
Do you have the Telegram chat app installed?
Already installed Install now
*Telegram is a chat app like WhatsApp / Facebook Messenger / Skype.
...