Question

How many of the devices you identify inside the control room need magnetism to operate

Answer 1

Answer:

hi

Explanation:

magnet (agar nahi te menu nahi pata)

Answer 2

Answer:

THERE ARE MANY DEVICES WHICH USE THE PRINCIPLE OF MAGNETISM TO OPERATE

THESE INCLUDE ELECTRIC MOTORS,GENERATORS ETC

Explanation:

Principle of magnetism

• In the presence of external magnetic field a current carrying coil experiences force.

• When there is rate of change of flux associated with the coil it has a current flowing it.

Devices which often are constructed using these principles

• ELECTRIC MOTOR - DC MOTOR
• ELECTRIC GENERATOR - AC GENERATOR
• SPEAKERS
• MICROPHONE
• DISC READERS
• TRANSDUCERS
• COMPUTERS
• ELECTROMAGNETS
• HEADPHONES
• MRI SCANNERS
• TELEVISION
• HARD-DRIVE
• REFRIGERATOR
• MOBILE PHONES
• BULLET TRAINS

Among these which we can find in a control room could be speakers , microphones etc