Three are used to power a portable electronic device identical batteries with E = 2.5 V each and negligible internal resistances,

connected in series. If inadvertently one of the batteries was

mounted with reverse polarity, what is the value of the supplied voltage

system?

Explanation:

Here two internal resistances are in parallel so equivalent internal resistance r

eq

=1∣∣1=

1+1

1×1

=1/2=0.5Ω

According to maximum power theorem the power will be max when internal resistance is equal to external resistance. since, r

eq

=R=0.5Ω

Maximum current through R is I

max

=

r

eq

+R

V

=

0.5+0.5

2

=2A

Maximum power is P

max

=I

max

2

R=2

2

×0.5=2W

plz follow and thanks me

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

0.3x0.21x0.08kg=mass 1 sheet

mass 500 = 500xmass 1

volume pile = 0.3x0.2x0.048

density=mass/volume= 500xmass 1/0.3x0.2x0.048

v patient student