Advertisements
Advertisements
Question
Name the device or machine which convert :
Chemical energy into electrical energy.
Advertisements
Solution
A cell, or battery, converts chemical energy into electrical energy.
APPEARS IN
RELATED QUESTIONS
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
A ball of mass 0.20 kg is thrown vertically upwards with an initial velocity of 20 m s-1. Calculate the maximum potential energy it gains as it goes up.
A pendulum is oscillating on either side of its rest position. The correct statement is:
Fill in the blank with suitable word :
The ability of a body to do work is called __________. The ability of a body to do work because of its motion is called __________.
Water stored in a dam possesses :
Name the device or machine which convert :
Electrical energy into sound energy.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
A bulb lights up when connected to a battery. State the energy change which takes place :
