Voltage, Current, & Resistance
the flow of electrons through a conductive substance
what is current
There are two theories concerning current flow.
What is Electron Theory and Conventional Current Flow Theory.
A simple circuit has a 9-volt battery connected to a resistor with a resistance of 3 ohms (Ω). What is the current flowing through the circuit?
what is 3 amps
two of the most common materials used in the production of electronic components.
What is Silicon and germanium
MOST important rule of electrical safety
what is To think before acting.
A current reverses its direction of flow at regular intervals
what is Alternating Current
What contains seven or eight valence electrons?
What is Insulator.
A small lamp draws 0.5 amps of current when plugged into a 120-volt household outlet. What is the resistance of the lamp?
what is 240 ohms
In a DC circuit, the current is directly proportional to voltage and inversely proportional to resistance.
What is Ohm's Law
Responsible for enforcing OH&S regulations
what is Individual Provinces and Territories
commonly causes a series arc fault.
what is Loose connections
which theory is when current flow is produced when an electron from one atom knocks electrons of another atom out of orbit
what is bump theory
A circuit board component has a resistance of 4.7 kΩ (kilo-ohms). If a current of 120 mA (milliamps) is measured passing through it, what is the voltage drop across the component?
what is 564 V
complete circuit is often referred to as a(n) _____ circuit
what is closed circuit
the mission of the CCOHS
what is to ensure safe and healthy Canadian workplaces
The neutral conductor is also referred to as the _____ conductor.
What is grounded conductor.
an atom has no charge
What is neutron
A precision resistor has a resistance value of 2.2 kΩ and is connected across an 11 V DC power supply. What is the current flowing through this resistor?
what is 5mA
1 Horsepower=_______ watts
what is 746 Watts
To be done immediately before testing a de-energized circuit
what is test the meter on a known live circuit.
What law states that the force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them?
what is Coulombs Law
How many electrons can be contained in any one orbit, or shell (Formula)
what is (2Nsquare)
Three resistors (10 ohm, 20 ohm, and 30 ohm) are connected is series across a 12v battery. What is the current flowing through the 20 ohm resistor?
what is 0.2 A
Approximately how many horsepower is an electrical device that is listed as 3,000 watts
what is 4 horsepower
Why is an appliance’s third prong important
what is connecting the appliance case to ground