Two identical batteries each emf 
2V and internal resistance 
are available to produce heat in an external resistance by passing a current through it. The maximum Joulean power that can be developed across 
using these batteries is
a)
1.28 W
b)
2.0 W
c)
W
d)
3.2 W
Two identical batteries each emf 2V and internal resistance are available to produce heat in an external resistance by passing a current through it. The maximum Joulean power that can be developed across using these batteries is
a)
1.28 W
b)
2.0 W
c)
W
d)
3.2 W
Question ID - 151514 | SaraNextGen Top Answer
Two identical batteries each emf 2V and internal resistance are available to produce heat in an external resistance by passing a current through it. The maximum Joulean power that can be developed across using these batteries is
a)
1.28 W
b)
2.0 W
c)
W
d)
3.2 W
|
Two identical batteries each emf |
|||||||
|
a) |
1.28 W |
b) |
2.0 W |
c) |
|
d) |
3.2 W |
1 Answer
127 votes
Answer Key / Explanation : (b) -
|
(b) For maximum power When batteries are connected in parallel.
Current Maximum power is given by
If we assume batteries to be connected in series, then
Current So, maximum power is now given by
In either case |
2 W
A
2 W
2 W127 votes
Answer Link
127