Find the weekly expense on using the iron box, Physics

Assignment Help:

Q. An iron box of 400 W power is used daily for 30 minutes. If the cost per unit is 75 paise, find the weekly expense on using the iron box.

Energy obsessive in 30 minutes          = Power × time in hours

= 400 × ½ = 200 W h

Energy consumed in one week           = 200 × 7 = 1400 Wh = 1.4 unit

Cost / week = Total units consumed × rate/ unit

 = 1.4 × 0.75 = Rs.1.05


Related Discussions:- Find the weekly expense on using the iron box

Determine average value of poynting vector, Show that average value of Poyn...

Show that average value of Poynting vector for a plane e-m wave is  1/2 √μ/e XH 2 .

Angle of banking, Angle of banking: The angle made by the line joining...

Angle of banking: The angle made by the line joining the outer raised edge of the road to the inner edge with the horizontal line is called the angle of banking. Let AC rep

Electric dipole, what should be the orientation of an electric dipole so th...

what should be the orientation of an electric dipole so that its potential enrgy is minimum

Describe specific charge, Describe specific charge? Desfine Thomson's exper...

Describe specific charge? Desfine Thomson's experiment to calculate e/m of an electron with relevant theory.

Applications of superconductors: a 15 phases, An inter metallic compound ha...

An inter metallic compound having the chemical formula A 3 B, where A represents a transition element and a crystal structure in which the B atoms are located as the corners and in

Merit of a scanning electron microscope, Q. Give one merit of a scanning el...

Q. Give one merit of a scanning electron microscope over a transmission electron microscope? Answer:- The SEM has turn into more popular than the TEM as it can produce ima

What is meant by uniform acceleration, When a moving body changes with time...

When a moving body changes with time,then we say that the body has acceleration.simentaniously the change in velocity is equal then it is called uniform acceleration .

Projectile Motion, Ask A rugby player passes the ball 9.75 m across the fie...

Ask A rugby player passes the ball 9.75 m across the field, where it is caught at the same height as it left his hand. At what angle was the ball thrown if its initial speed was 12

Write Your Message!

Captcha
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