System of Units, Voltage, Current, and Resistance (AS)

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System of Units

A standardized set of measurements used to quantify physical quantities

International System of Units (SI)

is a standardized system of measurement based on seven fundamental units, ensuring universal consistency in science and daily use.

Current

The rate of flow of electric charge through a conductor.

Ampere (A)

What is the SI unit of current?

Resistance

The opposition a material provides to the flow of electric current.

Ohm

What is the SI unit of resistance?

Voltage = Current x Resistance

What is Ohm’s Law?

Voltage is the pressure, Current is the flow, and resistance is the pipe’s narrowness

What is the water analogy for voltage, current, and resistance?

Voltage

The work done per unit charge to move a charge between two points in an electric field.

Volt (V)

The SI unit of voltage?

1 Coulomb per sec

1 ampere is equal to how many coulombs

Ohm’s symbol

“Ω” what symbol is this?

Meter (m)

What is the SI base unit of length?

Kilogram (kg)

What is the SI base unit of mass?

Second (s)

What is the SI base unit of time?

Ampere (A)

What is the SI unit of Electric current?

Kelvin (K)

What is the SI unit of Temperature?

Mole (mol)

What is the SI unit of Amount of substance?

Candela (cd)

What is the SI unit of Luminous intensity?

farad (F)

Unit for Capacitor

henry (H)

Unit for Inductor

Resistor

what electrical component is this unit for, ohm (Ω)?