A source of what potential difference is needed to charge a battery of 20V emf and internal resistance of 0.1Ω at a rate of 70A

Physics with Akhtiar Ali  Bullo

A source of what potential difference is needed to charge a battery of 20V emf and internal resistance of 0.1Ω at a rate of 70A  Physics class 12th problem solution  Inter class physics problem solution  Electrodynamics problem solution  Current electricity problems solution

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00:00question is a source of what potential difference is needed to charge a battery of 20 volt emf

00:17and internal resistance of 0.1 ohm at a rate of 70 ampere is first of all we will make a

00:29data and we have to find terminal potential and emf is obtained as 20 volt internal resistance

00:49is obtained as 0.1 ohm and electric current is obtained as 70 ampere so for solution

01:07is when a battery is being charged then terminal potential is greater than emf

01:25so total electric potential will be equal to terminal potential minus emf of battery so

01:39we have to find terminal potential is here emf is negative when we will take it on the

01:48other side of equal it will be positive so it will be v plus e is equal to terminal potential

01:56r we can also write it as terminal potential will be equal to v plus e is v is equal to

02:09i into r because it is internal potential so terminal potential will be equal to i into

02:20r plus emf of battery so terminal potential will be equal to is current is 70 into internal

02:32resistance resistance which is 0.1 ohm plus emf of battery is 20 volt so terminal potential

02:47will be obtained as 70 into 0.1 it will be 7 plus 20 so terminal potential will be obtained

02:57is 20 plus 7 it will be 27 volt is 27 volt electric potential is required to charge the battery of

03:0820 volt emf with the internal resistance 0.1 ohm

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