This topic contains a solution. Click here to go to the answer

Author Question: A simple electric doorbell probably uses ________ to ring the bell. A) an electromagnet B) ... (Read 32 times)

AEWBW

  • Hero Member
  • *****
  • Posts: 579
A simple electric doorbell probably uses ________ to ring the bell.
 
  A) an electromagnet B) transistor
  C) a DPDT switch D) a permanent magnet

Question 2

A relay is a device that ________.
 
  A) isolates the actuating signal from the control signal
  B) uses an electromagnet to open and close contacts
  C) has a coil to actuate some contacts that control other circuits
  D) all of these



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ergserg

  • Sr. Member
  • ****
  • Posts: 338
Answer to Question 1

A

Answer to Question 2

D




AEWBW

  • Member
  • Posts: 579
Reply 2 on: Jul 28, 2018
Wow, this really help


emsimon14

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

For a complete list of videos, visit our video library