TEJ 3M1: Electronics Unit Test on Circuit Laws and Components

Kirchhoff's Circuit Laws

• Kirchhoff's Current Law (KCL): The sum of all currents entering a node is equal to the sum of all currents leaving a node.
• Kirchhoff's Voltage Law (KVL): The sum of all voltage changes around a closed loop is equal to zero.

Ohm's Laws

• Ohm's Law: Voltage (V) is equal to Current (I) multiplied by Resistance (R): V = IR
• Resistance (R) is equal to Voltage (V) divided by Current (I): R = V/I
• Current (I) is equal to Voltage (V) divided by Resistance (R): I = V/R

Series Circuits

• A series circuit has components connected one after the other.
• The current is the same through all components in a series circuit.
• The voltage across each component is proportional to its resistance.
• The total resistance of a series circuit is the sum of the individual resistances: R_total = R1 + R2 + ... + Rn

Parallel Circuits

• A parallel circuit has components connected between the same two points.
• The voltage is the same across all components in a parallel circuit.
• The current through each component is inversely proportional to its resistance.
• The total resistance of a parallel circuit is less than the resistance of any individual component: 1/R_total = 1/R1 + 1/R2 + ... + 1/Rn

Resistors

• A resistor is a component that opposes the flow of electric current.
• Resistance is measured in ohms (Ω).
• Resistors can be connected in series or parallel to achieve a desired total resistance.

Diodes

• A diode is a component that allows current to flow in one direction but blocks it in the other.
• Diodes have a positive (anode) and negative (cathode) terminal.
• Diodes are used to rectify AC voltage to DC voltage.

LDRs (Light-Dependent Resistors)

• An LDR is a type of resistor that changes its resistance in response to changes in light levels.
• LDRs are used in applications such as automatic lighting systems.

Capacitors

• A capacitor is a component that stores electric energy.
• Capacitance is measured in farads (F).
• Capacitors can be connected in series or parallel to achieve a desired total capacitance.
• Capacitors are used to filter or regulate voltage.

Transistors

• A transistor is a component that amplifies or switches electronic signals.
• Transistors have a base, collector, and emitter terminal.
• Transistors are used to amplify weak signals or switch electronic circuits on or off.

Test your understanding of Kirchhoff's circuit laws, Ohm's Law, and circuit analysis techniques for series and parallel circuits. This quiz also covers the basics of resistors, diodes, LDRs, capacitors, and transistors, and how they work in electronic circuits. Prepare for your Ontario Grade 11 computer engineering TEJ 3M1 unit test with this quiz!