Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

What is the emf $_{\mathrm{X}}$ of a cell being measured in a potentiometer, if the standard cell's emf is 12.0 $\mathrm{V}$ and the potentiometer balances for $R_{\mathrm{x}}=5.000 \Omega$ and $R_{\mathrm{s}}=2.500 \Omega$ ?

$24 \mathrm{v}_{6} \mathrm{u}-$

Physics 102 Electricity and Magnetism

Chapter 21

Circuits, Bioelectricity, and DC Instruments

Direct-Current Circuits

Rutgers, The State University of New Jersey

University of Washington

University of Winnipeg

Lectures

11:31

In electrical engineering,…

12:44

01:07

Calculate the emf $_{x}$ o…

02:49

(a) What is the unknown em…

03:22

Consider the circuit shown…

02:52

In the circuit shown in $\…

02:30

{A} 99-\Omega$ resistor ha…

02:09

The emf of an ac source is…

05:08

02:51

In Fig. $27-82,$ an ideal …

04:30

A $24-\mathrm{V}$ emf is c…

01:24

The current lags the emf b…

04:40

In the circuit shown, an e…

04:09

(III) Two 9.4-k$\Omega$ re…

03:25

(a) Find the current in an…

03:20

(III) Two $9.4-\mathrm{k} …

01:56

(a) What is the current in…

01:25

A $9.0 \Omega$ resistor an…

00:24

Standard automobile batter…

05:21

A battery has an emf of 15…

05:32

05:50

In Fig. $27-44$ , the curr…

so we can simply use the formula given in the textbook to solve this part. The M F X is equal to a M F s times our eggs divided by artists. This is equal to 12 times five divided by 2.5. This will be able to 24 vote. So concept of potential meter is that we was not potential or not current to sense the unknown the IMF. So the external battery source is connected here and there is a gallon of meter here and the location off this trip is adjusted such that no current flows through the galvan Amita that his I g is equal to zero. So when we make this connection on, I'd use equal to zero. This means that the potential let's say this is this is a known a battery. This is yes and is it? This is 12 old. So this is positive for the world 12 volt on dhe. This is zero. So that yes cannot give out any extra current because they are at equal potential. So if there is equal potential, different or all, the potential difference is zero local inflows on DDE. Once we know this section are ex So in this case it will not be rx. This will be our guest. We find this out so that this current is I High times are must be equal to the office. Similarly, now we replace this with e x on DDE We find this point of contact where I Jerious zero again and we find that high times our ex is the value of X And then we take a ratio here to get this formula. So the battery that we are reading is 24 world. Thank you.

View More Answers From This Book

Find Another Textbook

Numerade Educator

In electrical engineering, a direct current (DC) circuit is an electrical ci…

Calculate the emf $_{x}$ of a dry cell for which a potentiometer is balanced…

(a) What is the unknown emf $_{x}$ in a potentiometer that balances when $R_…

Consider the circuit shown in E26.17, the voltage across the $2.00-\Omega$ r…

In the circuit shown in $\textbf{Fig. E26.17}$, the voltage across the 2.00$…

{A} 99-\Omega$ resistor has a current of 0.82 A and is connected in series w…

The emf of an ac source is given by 3. $v(t)=V_{0} \sin \omega t, \quad$ whe…

The emf of an ac source is given by $v(t)=V_{0} \sin \omega t, \quad$ where …

In Fig. $27-82,$ an ideal battery of emf $\mathscr{E}=12.0 \mathrm{V}$ is co…

A $24-\mathrm{V}$ emf is connected to the terminals $A$ and $B$(a) What …

The current lags the emf by $30^{\circ}$ in a series $R L C$ circuit with $\…

In the circuit shown, an emf of $150 \mathrm{V}$ is connected across a resis…

(III) Two 9.4-k$\Omega$ resistors are placed in series and connected to a ba…

(a) Find the current in an $8.00-\Omega$ resistor connected to a battery tha…

(III) Two $9.4-\mathrm{k} \Omega$ resistors are placed in series and connect…

(a) What is the current in a $5.60-\Omega$ resistor connected to a battery t…

A $9.0 \Omega$ resistor and a $6.0 \Omega$ resistor are connected in series …

Standard automobile batteries have six lead-acid cells in series, creating a…

A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.6 …

Consider the circuit shown below. Each battery has an emf of $1.50 \mathrm{V…

In Fig. $27-44$ , the current in resistance 6 is $i_{6}=1.40 \mathrm{A}$ and…

02:12

What current is needed in the solenoid described in Exercise 22.58 to produc…

02:02

A heart pacemaker fires 72 times a minute, each time a 25.0-nF capacitor is …

01:03

What is the separation between two slits for which 610-nm orange light has i…

02:40

A physicist is watching a 15-kg orangutan at a zoo swing lazily in a tire at…

04:24

An $L C$ circuit consists of a 3.00 $\mathrm{mH}$ inductor and a 5.00$\mu F$…

01:21

Suppose you measure the terminal voltage of a $1.585-\mathrm{V}$ alkaline ce…

01:02

Inside a motor, 30.0 A passes through a 250 -turn circular loop that is 10.0…

A 2.50 --diameter university communications satellite dish receives TV signa…

00:56

What is the intensity of an electromagnetic wave with a peak electric field …

01:45

What is the radius of an $\alpha$ particle?