RADR 2209 Exam 2 5 Laws Of Electrostatics - CORRECT ANSWER1. like charges repel: unlike charges attract 2. inverse square law (inversely proportional to distance^2 between them) 3.distribution (charges on external surface) 4. concentration (greatest

RADR 2209 Exam 2

5 Laws Of Electrostatics - CORRECT ANSWER-
1. like charges repel: unlike charges attract
2. inverse square law (inversely proportional to
distance^2 between them)
3.distribution (charges on external surface)
4. concentration (greatest where curvature is
greatest)
5. movement (only negative charges move along
solid conductors)

Current - CORRECT ANSWER-Flow of electrons
(amperes) (mA)

Resistance - CORRECT ANSWER-Impedes flow
of electrons (ohms)

Volt - CORRECT ANSWER-The potential
difference measured in volts. The amount of work
to be done to move a charge from one point to
another along an electric circuit.

Ohm's law - CORRECT ANSWER-voltage =
current x resistance (V=IR)

, Resistance depends on - CORRECT ANSWER--
Material
-Length
-Cross sectional area
-Temperature

Direct Current (DC) - CORRECT ANSWER-
moves in one direction (negative to positive)

Alternating Current (AC) - CORRECT ANSWER-
moves from negative to positive, then positive to
negative, with a pulsating voltage

Battery - CORRECT ANSWER-A device that
converts chemical energy to electrical energy,
stores charge long term

Capacitor - CORRECT ANSWER-stores charge
temporarily, cannot produce electrons

Diode (solid-state rectifier) - CORRECT
ANSWER-one way valve for electrons, converts
AC to DC to make electrons flow from cathode to
anode, routes electricity through x-ray tube
correctly