A battery of e.m.f 10V an internal resistance 2Ω is connected to a resistance of 6Ω. Calculate the p.d

saphash

9 years ago

the selected answer is wrong because the formula used is wrong.

the correct one should be

V=(R+r)I

10=(2+6)I

I=10/8

=1.25

marvyoye

10 years ago

The selected answer is wrong:

I=E/R+R

I.E. 10/2+6 = 1.25

JeremyAlo

5 years ago

Answer is 2.5V.
E=IR
10=I×(6+2)
I=1.25.

V=E-IR
V=10-1.25×8
V=2.5V