Polarity

Which are the positively charged particles in the nucleus of an atom? 

• Electron

• Neutron

• Proton

• Quark

Which are the negatively charged particles of an atom that orbits the nucleus? 

• Electron

• Neutron

• Quark

• Proton

Which of the three parts of an atom are moving through a conductor? 

• Proton

• Electron

• Neutron

• Nucleus

Tags

NGSS.MS-PS2-5

Electrons flow from the ______ terminal to the ________ terminal in an electric circuit. 

• positive, negative

• negative positive

Which charges will attract each other? 

• negative and negative

• positive and positive

• positive and negative

Which term refers to the direction of the flow of electric current? 

• polarity

• calibration

• voltage

• conductivity

_____ flows in one direction.

• AC

• DC

____ changes between positive and negative polarity (changes direction current flows). 

• AC

• DC

If using DC- when welding the electrode will be connected to the ______ terminal and your workpiece to the _________. 

• positive, negative

• negative, positive

If using DC+ when welding the electrode will be connected to the _______ terminal and your workpiece to the ________. 

• negative, positive

• positive, negative