Electronic Principles
Which one of the following principles best describes the basic operation of an electromagnet?

Like magnetic poles attract, while unlike poles repel
None of these
Current is induced in a conductor that is moving through a magnetic field
Current flowing through a conductor generates a magnetic field
Like magnetic poles repel, while unlike poles attract

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
Which one of the following phrases most accurately describes a purely inductive circuit?

Combinations of resistance and inductive reactance provide any opposition to current flow
Resistances provide the only opposition to current flow
None of these
The ac voltage lags the current by 90 degree
Inductive reactance provides the only opposition to current flow

ANSWER DOWNLOAD EXAMIANS APP