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Author Question: Polarity of an electromagnet can be changed by ________. A) changing the amount of current flow ... (Read 80 times)

saraeharris

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on: Jul 26, 2018
Polarity of an electromagnet can be changed by ________.
 
  A) changing the amount of current flow through the coil of wire
  B) changing the frequency of the current flow through a coil of wire
  C) changing the direction of current flow through the coil of wire

Question 2

The strength of the field of ________ can be changed easily.
 
  A) an electromagnet B) a permanent magnet C) a dipole


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Dominic

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Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

A


saraeharris

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Reply 2 on: Jul 26, 2018
:D TYSM

xiaomengxian

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Reply 3 on: Yesterday
Excellent

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