Problem

A battery with an emf of 12.0 $\mathrm{V}$ has a …

01:33

Problem 2 Easy Difficulty

(a) Find the current in an $8.00-\Omega$ resistor connected to a battery that has an internal resistance of 0.15$\Omega$ if the voltage across the battery (the terminal voltage) is 9.00 $\mathrm{V}$ . (b) What is the emf of the battery?

Answer

a. 1.13 A
b. 9.17 \Omega

Topics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Book Cover for College Physics 2017

College Physics 2017

Chapter 18

Direct-Current Circuits

Discussion

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Video Transcript

to solve this. Some we need to use homes law in this case and that is you noted, as we use equal to I and you are will just joined down the data. Furs in Step, eh? Where a distance value is giving us a domes, we'll use the variable Small are, as in during the resistance, whose value is given at 0.1 firearms. We is used to indicate terminal mortgage whose value is given as nine words. So in order to calibrate current, we make use off alms low on in order to find that it will be a racial war dish to the resistance working values given as nine would. The distance is off eight rooms, and by calculating this, we'll get the value off current as 1.125 amperes. Therefore, we'll write the final value as 1.13 amperes and this will be the value of the current. What's there be? We need to calculate e m s off the battery. Now the question for the IMF is given us absolute is equal to We bless I into smaller that is in general distance. Now this particular notation is used for E. M F, which is called It's a great later and which is known as Upset all. As you already know the stands for wordage, I stand sinful, couldn't and small R is in going a resistance. Let's put the values so absolute that is e M F is equal to nine void plus 1.13 amperes multiplied by and Dona Resistance, which is 0.1 firearms. By calculating this will get nine world plus 0.1695 words, which is coming as 9.1695 which we can write it as 9.17 boards finally, So value of the IMF is 9.17 bold, and these are two answers.

MH

Manish H.

Topics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Book Cover for College Physics 2017

College Physics 2017

Chapter 18

Direct-Current Circuits

Top Physics 102 Electricity and Magnetism Educators

Zachary M.

Hope College

Aspen F.

University of Sheffield

Jared E.

University of Winnipeg

Meghan M.

McMaster University