Variable-voltage power supply

Assignment Help Physics
Reference no: EM131059393

A 280 Ω resistor is connected to a variable-voltage power supply.

(a) What voltage is necessary to cause a current of 0.7 A in the resistor? = ________ V

(b) What current flows in the resistor when the voltage is 19 V?= ___________ A

Reference no: EM131059393

Questions Cloud

Direction relative to the velocity : What is the magnitude of the net force acting on the vehicle at this time and the force's direction relative to the velocity?
Is it ethical for a company to quote a low price : Is it ethical for a company to quote a low price for a software
Surface of a planet of mass : A ball of mass m on the surface of a planet of mass M and radius R is moved to a height R above the planet. The work done on the ball by gravity is?
Why black mens commitment to fighting for the united states : Write a fiveparagraph essay in which you discuss at least three reasons why black men's commitment to fighting for the United States was a remarkable act of social responsibility.
Variable-voltage power supply : A 280 Ω resistor is connected to a variable-voltage power supply. (a) What voltage is necessary to cause a current of 0.7 A in the resistor? = ________ V
Justify why you have included each factor : Suggest four factors that might have significant effects on the initial COCOMO estimate and propose possible values for these factors. Justify why you have included each factor.
Front of a lens of focal length : A pecnil 10 cm long and 70 cm in front of a lens of focal length -50 cm. The image is
Number of pricing strategies such as cost-plus pricing : 2 simple questions for discussion. These are fairly easy questions to answer I just do not have time to look through things today. Please answer. Thank you!
Frequency shift of the ultrasound : A Doppler blood flow unit emits ultrasound at 5.4 MHz. What is the frequency shift of the ultrasound reflected from blood moving in an artery at a speed of 0.24 m/s?

Reviews

Write a Review

Physics Questions & Answers

  Projectile is fired from ground level over level ground

A projectile is fired from ground level over level ground by an initial velocity that has a vertical component of 20 m/s and a horizontal component of 30 m/s. For g = 10m/s^2. The distance from launching to landing point is?

  Find what potential difference is induced across its ends

A very thin 25 centimeter copper bar is aligned horizontally along the east-west direction. find what potential difference is induced across its ends

  What is the magnitude and direction of the current in wire

three long wires hang vertically. the distance between wire 1and 2 is 20 cm. on the left, wire 1 carries an upwardcurrent of 1.4 A. the the right, wire 2 carries a downwardcurrent of 4.4 A. what is the magnitude and direction of the current in wire..

  What is its average acceleration during that contact

To test the quality of a tennis ball, you drop it onto the floor from a height of 4.66 m. What is its average acceleration during that contact

  Calculate the average force the radiation exerts on the roof

After filtering through the atmosphere, the Sun's radiationilluminates Earth's surface with an average intensity of 1.0kW/m2. calculate the average force the radiation exerts on the roof

  What must be the linear mass density of the cord

Suppose the tension in a cord is 14.0 N. If the speed of a wave in the cord is 8.50 m/s, then what must be the linear mass density of the cord

  Find the magnitude of the boxs acceleration

Forces of 83 N east, 63 N north, 30 N south, 41 N west aresimultaneously applied to a box of mass 10.9 kg. Find the magnitude of the box's acceleration

  What is the diameter of the hole

A large storage tank, open at the top and filled with water, develops a small hole in its side at a point 15.8 m below the water level.  If the rate of flow from the leak is equal to 2.00 10-3 m3/min, determine the speed at which the water leaves th..

  What was the muzzle speed of the bullet

A 16 g bullet strikes and becomes embedded in a 1.10 kg block of wood placed on a horizontal surface just in front of the gun. what was the muzzle speed of the bullet

  How many protons are in all the oceans on earth

A typical half life calculated from the simplest such theory, the SU(5) model, is about 10^32 years. How many protons are in all the oceans on earth

  Determine the work done by the force of friction

A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.

  Calculate the classical momentum of a neutron

Calculate the classical momentum of a neutron traveling at 0.997c, neglecting relativistic effects

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