Current Electricity and Electrical InstrumentHard
Question
N cells each of e.m.f. E & identical resistance r are grouped into sets of K cells connected in series. The (N/K) sets are connected in parallel to a load of resistance R, then;
Options
A.Maximum power is delivered to the load if K =
B.Maximum power is delivered to the load if K =
C.Maximum power delivered to the load is 
D.Maximum power delivered to the load is 
Solution
Eeq = 
Eeq = KE
.........upto 
erq = 
For maximum power req = R ⇒
= R ⇒ K = 
Pmax =
Pmax =
⇒ Pmax = 
Eeq = KE
.........upto erq = For maximum power req = R ⇒
= R ⇒ K = Pmax =
Pmax =
⇒ Pmax = Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
Calculate current from battery just after switch is closed (t → 0) :-...When current in a coil changes from 5 A to 2 A in 0.1 s, average voltage of 50V is produced. The self -inductance of the...A metal rod of resistance 20Ω is fixed along a diameter of a conducting ring of radius 0.1 m and lies on x-y plane....The current through the ammeter shown in figure is 1 A. If each of the 4Ω resistor is replaced by 2Ω resistor,...In the network shown, points A, B and C are potentials of 70 V, zero and 10 V respectively....