What is the internal resistance of the battery

Assignment Help Physics
Reference no: EM13539326

A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.0 V when it is delivering 22.0 W of power to an external load resistor R.

a) What is the value of R?

b) What is the internal resistance of the battery?

Reference no: EM13539326

Questions Cloud

Necessary to keep the car traveling at constant speed : A 31000- kg railroad car with an open top rolls along a straight track with a speed of 4.91 km/h. It passes under a water fall that pours water straight into the car at a rate of 600 kg/s How much force is necessary to keep the car traveling at const..
What frictional force was applied by the brake pad : A uniform 2.45- kg spinning disk with a radius of 0.253 m is brought to rest by a brake-pad pressed against the side 0.200 m from the rotation axis. The wheel is brought to rest from an angular velocity of 18.7 rad/s in a time of 21.1 s. What frictio..
The three particles shown move along a straight line : The three particles shown move along a straight line (1-D). One particle is initially moving to the right, while the other particles are stationary and separated slightly, as shown in the figure. The two stationary particles have the same mass whi..
Fraction of balls initial kinetic energy is stored in spring : A ball of mass 0.40 kg is fired with velocity 180 m/s into the barrel of a spring gun of mass 1.5 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to fr..
What is the internal resistance of the battery : A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.0 V when it is delivering 22.0 W of power to an external load resistor R.
Find the temperature of the hot filament : A certain lightbulb has a tungsten filament with a resistance of 19.4 ? when at 20.0°C and 150 ? when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature o..
The length of wire you must use to wind the coil : A portion of Nichrome wire of radius 3.95 mm is to be used in winding a heating coil. If the coil must draw a current of 9.70 A when a voltage of 120 V is applied across its ends, find the following. (Take the resistivity of nichrome to be 1.50 10..
What must be the length of this wire : Suppose you wish to fabricate a uniform wire from 1.80 g of copper. The wire is to have a resistance of R = 0.380 ? and all the copper is to be used.
Consider a fixed observation point within the conductor : Suppose the current in a conductor decreases exponentially with time according to the equation I(t) = I0e-t/?, where I0 is the initial current (at t = 0), and ? is a constant having dimensions of time. Consider a fixed observation point within the..

Reviews

Write a Review

Physics Questions & Answers

  What is the position equation of the wave

A wave has a known propagation velocity of 4.32 m/s and a wavelength of 0.388 meters. What is the position equation of the wave

  Find the kinetic energy of the system after mass is released

A 0.4 kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 150 J. find the kinetic energy of the system after the mass is released

  What is the frequency of sound that is produced

Coin is placed 14.0 from the axis of the rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on turntable until a rate of 40.0 (revolutions per minute) is reached, at that point the coin s..

  By what factor does its emission exceed the emission

Two otherwise identical bodies have temperatures of 330K and 3000K , respectively. By what factor does its emission exceed the emission of the other body

  Find the total magnification of the telescope

A reflecting telescope has a main mirror with fM = 620 mm. If an eyepiece with a magnification of 15 is used, what is the total magnification of the telescope

  Find the power delivered by the emf of the battery

When a 24 Ohm resisotr is connected across a 12 Volt Battery, a current of 482 ma flows. What is the power delivered by the emf of the battery

  How far from the finish line is the slower runner

In and 8.00 km race, one runner runs at a steady11.0 km/h and another runs at 14.0 km/h. How far from the finish line is the slower runner

  What is the outside volume of the object

A closed steel object is known to have a hollow cavity withint it. It weights 4800 N in air and 3200 N when wieghed under water. What is the outside volume of the object

  What is the velocity of the given mass

A 4.7-g object moving to the right at 18 cm/s makes an elastic head-on collision with a 9.4-g object that is initially at rest. What is the velocity of the 4.7-g mass after the collision

  Find the magnitude of the net torque exerted on the branch

Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree at an angle of 33° above the horizontal. What is the magnitude of the net torque exerted on the branch by the children

  Determine the speed of the boat

Johnie wants to go sailing, but their is no wind. Johnie mounts an Industrial Fan on his sail boat with a 40 N force. What is the speed of the boat

  Calculate the final speed of the spheres center of mass

A sphere of radius r starts from rest and rolls without slipping along a curved surface, Find the final speed v of the sphere's center of mass

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