Find the batterys emf and internal resistance

Assignment Help Physics
Reference no: EM13646805

When a car's starter is in use, it draws a large current. The car'slights draw much less current. As a certain car is starting, thecurrent through the battery is 61.8 A and the potential difference across the battery terminals is8.91 V. When only the car's lights areused, the current through the battery is 1.84 A and the terminal potential difference is13.0 V.

Find the battery's emf.?

Find the internal resistance.

Reference no: EM13646805

Questions Cloud

The current in a single-loop circuit with one resistance ris : The current in a single-loop circuit with one resistance Ris 7.0 A. When an additionalresistance of 3.0 is insertedin series with R, the current drops to 3.0 A. What is R?
Solar cell generates a potential difference : A solar cell generates a potential difference of 0.10 V when a450 resistor is connected across it, and a potential difference of 0.15 V when a1200 resistor is substituted.
The maximum induced emf in a generator rotating : The maximum induced emf in a generator rotating at230 rpm is 40 V. How fast must the rotor of the generatorrotate if it is to generate a maximum induced emf of58 V?
Two objects hang on a pulley from the ceiling : Two objects hang on a pulley from the ceiling, mass 1 is 3kg andis resting on the floor while mass 2(5kg) is hanging in the air mass 2 is 4m above the floor
Find the batterys emf and internal resistance : When a car's starter is in use, it draws a large current. The car'slights draw much less current. As a certain car is starting, thecurrent through the battery is 61.8 A and the potential difference across the battery terminals is8.91 V.
What is the distance between the plates : A parallel-plate capacitor has a voltage V = 6.0 V between itsplates. Each plate carries a surface charge density σ = 7.0nC/ m2. What is the distance between the plates?
What is the value of the capacitor : A capacitor is discharged through a 20 \Omega resistor. The dischargecurrent decreases to 23\% of its initial valuein 1.9 ms. What is the value of the capacitor?
What is the speed of the boat as it leaves the ramp : A 285-kg stunt boat is driven on the surface of a lake at aconstant speed of 13.5 m/s toward a ramp, which is angled at27.1° above the horizontal. The coefficient of friction between the boat bottom and the ramp'ssurface is 0.150, and the raised e..
Drawing shows a version of loop-the-loop trick for small car : The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 3.2 m/s, what is the largest value that the radiusr can have if the car is to remain in contact with thecircular track at all times?

Reviews

Write a Review

Physics Questions & Answers

  Calculate the initial speed of the stone

A stone thrown horizontally from a height of 5.87 m hits the ground at a distance of 13.90 m. Calculate the initial speed of the stone

  What''s the others velocity

A 61 kg skater and a 77 kg skater stand at rest on frictionless ice. They push off, and the 61 kg skater moves at 1.9 m/s in the + x-direction. What's the other's velocity? (Express your answer to two significant figures and include the appropriate u..

  Calculate the energy of the electromagnetic radiation

An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation

  Determine the couple moment that acts on the assembly

Probelm 4-93 in Engineering Mechanics 13th. If F={100k} N, determine the couple moment that acts on the assembly. Express the result as a cartesian vector. Member BA lies in the xy-plane. Picture not shown, how do I post the picture? And I do not und..

  What is the change in internal energy of gas

A gas expands from I to F. The energy added to the gas by heat is 423 J when the gas goes from I to F along the diagonal path.

  Estimate the inductance of this solenoid

A solenoid is made by wrapping a wire so that it makes a solenoid (coil) having 500 turns of diameter 8.00 cm and length 40.0 cm. Find the inductance of this solenoid

  Find the magnitude of the magnetic field in the solenoid

Copper wire (resistivity 1.7x10-8 italic capital omega space straight m , circular cross section with radius 2.34 mm) is used to form 2 thousand circular loops of wire in a solenoid

  What is the average density of the full gas can

A 2.00 kg steel gas can holds 10.0 L of gasoline when full. What is the average density of the full gas can

  What is the force the right support exerts on beam

A gymnast with mass m1 = 49 kg is on the balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 126 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left en..

  The magnitude and direction of the electric field

A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 30 degree angle from the horizontal, at what initial speed must he throw the ball so that it goes through the basket without striking the back..

  What is the value of the unknown resistor

If a 93.0-V emf is connected to the terminals A and B and the current in the 4.0-? resistor is 16.8 A, what is the value of the unknown resistor R

  Estimate what is the total outward force on the window

A viewing window on the side of a large tank at a publicaquarium measures 50 in. by 60 in. What is the total outward force on the window

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd