basic electricity2

Basic electricity2

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ELECTRICITY ELECTRICITY D.C. stands for direct current which flows in one direction only (­ to +) A.C.stands for alternating current which changes direction 50 times per second. ELECTRICITY ELECTRICITY D.C. is seen as a straight line on the oscilloscope. A.C. is seen as a wavey line on the oscilloscope. ELECTRICITY ELECTRICITY An electric current is a flow of charged particles called electrons. You will see the circuit symbols on the side wall. ELECTRICITY ELECTRICITY Current has the symbol I and is measured in amps (A) Resistance has the symbol R and is measured in ohms (Ω ) Voltage has the symbol V and is measured in volts(V) ELECTRICITY ELECTRICITY Current is measured with an ammeter in series. Voltage is measured with a voltmeter in parallel. ELECTRICITY ELECTRICITY V = IxR V I R...
View Full Document

Ask a homework question - tutors are online