Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination?

david890

12 years ago

If the cells are connected in series,effective internal resistance will be sum of all the individual resistances,ie 4+4+4+4=16 ohms.

Adeola2055

2 years ago

Wrong answer the answer should be D
EMF is same in parallel connection so 1.5 is correct while the resistance should be 4 as per 1/4+1/4+1/4+1/4 = 1
Since it is same denominator just add it numerator and u get 4/4 Greek it down u get 1

VictorKachi

6 years ago

D is correct because the e.m.f is in parallel, i.e, all the volts will remain constant.

nzoputa96

10 years ago

if connected in series therefore the emf would be 6v and internal resistance 16ohm

amure100

3 years ago

D is the correct answer

OsimileGod

10 years ago

Ao wil it b 6v pls, i mid explanation

King86

12 years ago

What if it is connected in series

GodackG

11 years ago

D@ gud

OMC_1

1 year ago

what if it is connected to both parallel and series

Sami86

3 years ago

A mistake in the explanation

Dallex99

10 years ago

The r should be 16/4 =4 ohms