An electric motor converts electrical energy into mechanical energy.
What is electric motor?
An electric motor is an electrical machine that converts electrical energy into mechanical energy.
A generator is mechanically identical to an electric motor, but operates with a reversed flow of power
Hence it will convert mechanical energy into electrical energy.
Some applications of electric motor are:
Industrial fans, blowers and pumps, machine tools, household appliances, power tools, vehicles, and disk drives.
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Answer:
The magnetic flux density is 
Explanation:
Given that,
Distance = 0.36 m
Current = 3.8 A
We need to calculate the magnetic flux density
Using formula of magnetic field

Where,
r = radius
I = current
Put the value into the formula


Hence, The magnetic flux density is 
Answer:
471 N
Explanation:
Weight is just another word for the force of gravity.
Weight is a force that acts at all times on all objects near Earth. The Earth pulls on all objects with a force of gravity downward toward the center of the Earth (g-9.81 m/s2)
so we can simply say
weight =mass * gravitaitonal acceleraition
= 48 * 9.81
=470.88 N
= 471 N
The mass of an object affects how powerful the attractive force is. To feel the pull / gravitation the mass of the object would have to be huge, bigger than that of massive buildings