Calculate the e.m.f of the cell in the above circuit if its internal resistance is negligible

a

12 V

b

8 V

c

2 V

d

36 V

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Correct Option
b

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Discussions (10)

Qowwiyat
1 year ago

1/R( total)= 1/r1 +1/r2
1/R = 1/3 +1/6
our lcm will be 6 since both 3 and 6 can go in 6
3 in 6 is two , 6 in 6 is one
therefore, 1/R= 2+1/6
1/R=3/6
remember we are calculating for R
R=6/3=2//
we are asked to find the emf
formula for emf =I(R+r), r= internal resistance which is negligible in the question (0).
emf=4(2+0)= 4×2=8v(unit is v)

Mbak_Gift
1 year ago

there is no diagram

CHRIST IS KING
2 months ago

Sweet question
correct

Qowwiyat
1 year ago

first we will calculate the effective or total resistance
note:resistance are connected in parallel therefore we will calculate the inverse

Peagorgeous1
2 years ago

When he divided by 6, I didn't get thag part. and how did he get the 1+2 on top...He rushed that part

Tonyrex11
9 years ago

wrong c

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