Question

A battery has an emf of 15.0 V. The terminal voltage of the battery is 12.6...

A battery has an emf of 15.0 V. The terminal voltage of the battery is 12.6 V when it is delivering 14.0 W of power to an external load resistor R.

(a) What is the value of R?
Ω

(b) What is the internal resistance of the battery?
Ω

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
If you connect a resistor to a battery with a given emf, the measured terminal voltage...
If you connect a resistor to a battery with a given emf, the measured terminal voltage is V. Next you connect in parallel another resistor to the first one. As a result, The terminal voltage increases; The terminal voltage decreases; The terminal voltage depends only on the internal resistance of the battery and doesn’t depend on a load.
A battery with an emf of 12.0 V shows a terminal voltage of 11.2 V when...
A battery with an emf of 12.0 V shows a terminal voltage of 11.2 V when operating a circuit with four light bulbs, two in parallel connected in series with the other two also in a parallel arrangement, each rated at 6 W (at 12.0 V). (a) Draw a diagram of the arrangement. (b) What is the total external resistance of this circuit? (c) What is the current in each bulb? (d) What is the internal resistance of the battery?
With a 1600 MΩ resistor across its terminals, the terminal voltage of a certain battery is...
With a 1600 MΩ resistor across its terminals, the terminal voltage of a certain battery is 2.59 V . With only a 5.09 Ω resistor across its terminals, the terminal voltage is 1.67 V . 1.) Find the internal emf of this battery. E = ________ V 2.) Find the internal resistance of this battery. r = _________Ω 3.) What would be the terminal voltage if the 5.09 Ω resistor were replaced by a 7.09 Ω resistor? V3 = _____________...
Calculate the terminal voltage for a battery with an internal resistance of 0.620 and an emf...
Calculate the terminal voltage for a battery with an internal resistance of 0.620 and an emf of 6.50 V when the battery is connected in series with the following components.
With a 1400 MΩ resistor across its terminals, the terminal voltage of a certain battery is...
With a 1400 MΩ resistor across its terminals, the terminal voltage of a certain battery is 2.64 V . With only a 5.10 Ω resistor across its terminals, the terminal voltage is 1.70 V . - Find the internal resistance of this battery. and What would be the terminal voltage if the 5.10 Ω resistor were replaced by a 7.10 Ω resistor?
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0890 ?....
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0890 ?. The headlights together have an equivalent resistance of 5.10 ? (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) V (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the...
3) A damaged car battery with an emf of 11.4 V and an internal resistance of...
3) A damaged car battery with an emf of 11.4 V and an internal resistance of 0.01 ohms is connected to a load of 2.0 ohms. To help the battery, a second battery with an emf of 12.6 V and an internal resistance of 0.01 ohms is connected by jumper cables to the terminals of the first battery. a) Draw a diagram for the circuit. b) Find the current in each part of the circuit. c) Find the power delivered...
30) A damaged car battery with an emf of 11.4 V and internal resistance of 0.01...
30) A damaged car battery with an emf of 11.4 V and internal resistance of 0.01 ohms is connected to a load of 2.0 ohms. To help the battery, a second battery with an emf of 12.6 V and internal resistance of 0.01 ohms is connected by jumper cables to the terminals of the first battery. A) Draw a diagram for the circuit. B) Find the current in each part of the circuit. C) Find the power delivered by the...
Phsics Problem,Please show steps. A) You are given a battery, which has, of course, a particular...
Phsics Problem,Please show steps. A) You are given a battery, which has, of course, a particular emf and a particular internal resistance (Rint). You decide to determine its internal resistance and its emf by connecting an ammeter in series with a variable resistor across the battery. By varying the resistance you can draw more or less current from the battery. You also use a voltmeter to measure the voltage across the terminals of the battery. Case 1) When you draw...
QUESTION 16 1. A battery has a 24.0 V "emf" but the terminal voltage is 22.0...
QUESTION 16 1. A battery has a 24.0 V "emf" but the terminal voltage is 22.0 V when the battery is connected to a 7.5 ohm resistor. Determine the internal resistance of the battery. a. 1.2 ohm b. 3.2 ohm c. 0.68 ohm d. 0.75 ohm e. 0.27 ohm QUESTION 17 1. A proton travels south and enters a region that contains a magnetic field. The proton feels a downward force toward Earth. Determine the direction of the magnetic field....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT