Electronics Information

Ohm’s Law Formula

V = I x R

Power Law Formula

P = V x I

What is the symbol, unit, and unit symbol for Voltage?

What is the symbol, unit, and unit symbol for Voltage?

SYMBOL: V

UNIT: Volt (V)

Push/pressure that moves electricity.

What is the symbol, unit, and unit symbol for Current?

SYMBOL: I

UNIT: Ampere (A)

Flow of electricity.

What is the symbol, unit, and unit symbol for Resistance?

SYMBOL: R

UNIT: Ohm (Ω)

How much something resists flow.

What is the symbol, unit, and unit symbol for Power?

SYMBOL: P

UNIT: Watt (W)

How much energy is being used.

What is the symbol, unit, and unit symbol for Capacitance?

SYMBOL: F

UNIT: Farad (F)

Ability to store electric charge.

What is the symbol, unit, and unit symbol for Inductance?

SYMBOL: H

UNIT: Henry (H)

Ability to store energy in a magnetic field.

Milli

1 mA = 0.001 A (One thousandth of an Ampere)

Kilo

1 kΩ = 1000 Ω (1000 Ohms)

Mega

1 MW = 1,000,000 W (1 Million Watts)

What is the name of this component and what does it do?

A resistor limits the flow of electric current in a circuit, maintaining a controlled amount of current and protecting components from excess current.

Slows down current. (adds resistance)

What is the name of this component and what does it do?

A capacitor stores electrical energy in an electric field, releasing it when needed. It smooths out voltage fluctuations and can block direct current while allowing alternating current to pass.

Stores electrical charge.

What is the name of this component and what does it do?

A inductor stores energy in a magnetic field when electrical current flows through it, opposing changes in the flow of current.

Resists change in current.

What is the name of this component and what does it do?

A diode converts alternating current (AC) to direct current (DC), ensuring current flows in a single direction while preventing reverse flow.

Allows current in one direction only (unidirectional)

What is the name of this component and what does it do?

A transistor is a semiconductor device that regulates current or voltage flow, acting as a switch or amplifier in electronic circuits.

Acts as a switch or amplifier.

What is the name of this component and what does it do?

A fuse protects electrical circuits by breaking the circuit when the current exceeds a certain level, preventing damage from overheating or short circuits.

Breaks the circuit if the current is too high (safety!)

What is the name of this component and what does it do?

A battery stores and supplies electrical energy, converting chemical energy into electrical energy to power devices.

Provides DC voltage (chemical energy to electric)

What is DC (Direct Current)?

Electric current flows in one direction only. (one way)

Think: Batteries, Solar Panels, DC Power Supplies

What is AC (Alternating Current)?

Electric current changes direction periodically. (back and forth)

Think: Wall outlets, power plants, generators