Electronic Principles
Voltage is

The number of free electrons in an atom
Trie force that causes electrons to flow
None of these
The smallest electrically charged particle
The flow of charged particles through a material

ANSWER DOWNLOAD EXAMIANS APP

Electronic Principles
The core of an electromagnet is said to be in saturation when:

changing the polarity of the current in the coil changes the polarity of the magnetic field around the core
None of these
the core is permitted to move freely within the coil
an increase in current through the coil causes no further increase in the mmf
frequent changes in the direction of current through the coil causes heating effects in the core material

ANSWER DOWNLOAD EXAMIANS APP