The correct answer is (b) The bulb consumes electrical energy of 100 Joule per second.
· The power rating of 100 W (watts) on an electric bulb means that the bulb consumes electrical energy at a rate of 100 joules per second. Power is defined as the rate of energy consumption or work done per unit of time.
Explanation:
· 1 Watt = 1 Joule/second.
· A 100 W bulb uses 100 joules of energy every second to produce light and heat.
Calculation:
Power==>100W=
English
100 Questions
100 Marks
90 Mins English English100 Questions100 Marks90 Mins English English40 Questions30 Marks25 Mins EnglishA ball of mass 50 grams is moving with a velocity of 15 m/s. What is its kinetic energy?
The kinetic energy of an object is derived using which of the following equations of motion?
The kinetic energy of a particle depends on which of the following?
For a rigid body, the angular velocity of any particle about a given axis of rotation is:
In a dam, potential energy of water changes into ___________, which rotates the turbine.
If k is the spring’s force constant and x is the displacement from its undeformed position of a spring, then the potential energy (V) of the spring is:
If a body of mass ‘m’ is taken to a height ‘h’ from the surface of earth, the work done will be:
Which physicist is known to establish the relationship between mechanical work andheat transfer?
For a book of mass m, moving a distance d on a smooth horizontal table, the work done due to gravitational force is:
Find the energy possessed by an object of mass 10 kg when it is at a height of 6 m above the ground. Given,
g = 9.8
Suggested Test Series
Suggested Test Series
