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Grade 12Electric Current

In order to determine the emf of a storage battery it was conneted in series with a standard cell in a certain circuit and a current I1was obtained. When the battery is connected to the same circuit opposite to the standard cell a current I2 flows in
the external circuit leaving from the positive plate of the storage battery. What is the emf of the standard cell is
of the storage battery ? The emf of the standard cell is E2.

Mostafijur Rahaman

12 Years agoGrade 12

6 Answers

Sher Mohammad

12 Years ago

E=standard+Emf = V+ir

-v-ir+Estandard= Emf

v2+Ir= E

solving above 2 give the standard emf.

Sher Mohammad

12 Years ago

let asuume E is the unknown potential

E+E2= V1+I1R

E= v2+I2R

taking differnce

E2= v1-v2+ (I1-I2)R

This equation give R,

putting back R gives E , the unkwon emf.

sher mohammad

faculty askiitians

b.tech, iit delhi

Sher Mohammad

12 Years ago

let asuume E is the unknown potential

E+E2= V1+I1R

E= v2+I2R

taking differnce

E2= v1-v2+ (I1-I2)R

This equation give R,

putting back R gives E , the unkwon emf.

sher mohammad

faculty askiitians

b.tech, iit delhi

Sher Mohammad

12 Years ago

let asuume E is the unknown potential

E+E2= V1+I1R

E= v2+I2R

taking differnce

E2= v1-v2+ (I1-I2)R

This equation give R,

putting back R gives E , the unkwon emf.

sher mohammad

faculty askiitians

b.tech, iit delhi

Sher Mohammad

12 Years ago

let asuume E is the unknown potential

E+E2= V1+I1R

E= v2+I2R

taking differnce

E2= v1-v2+ (I1-I2)R

This equation give R,

putting back R gives E , the unkwon emf.

sher mohammad

faculty askiitians

b.tech, iit delhi

Kaushal

6 Years ago

let asuume E is the unknown potential

E+E2= V1+I1R

E= v2+I2R

taking differnce

E2= v1-v2+ (I1-I2)R

This equation give R,

putting back R gives E , the unkwon

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