What is the cost of running five 50W lamps and four 100W lamps for 10 hours if electrical energy costs 2 Kobo per KWh?

Similar Questions

Any line or section through an advancing wave in which all the particles are in the same phase is ca...

The minimum energy required to cause photoelectric emission when the surface of a metal is irradiate...

The force required to make an object of mass m, travelling with velocity v, turn in a circle of radi...

Given the inductor of inductance 5mH, 10mH and 20mH connected in series, the effective inductance is...

In a tuned radio receiver R, L, C series circuit for resonance, the inductive and capacitive reactan...

A charge of 2.0 x 10\(^{-5}\) C experiences a force of 80N in a uniform electric field. Calculate th...

A pool of water appears to be 1.0m deep when viewed vertically from above. If the refractive index o...

A body of mass 20g projected vertically upwards in vacuum returns to the point of projection after 1...

Which of the following devices is used to determine the relative density of an acid? ...

Which of the units of the following physical quantities are derived? I. Area II. Thrust III. Pres...