Resistors
Course Guide Topics
Current
DC & AC Current
Voltage
Resistance
Ohm’s Law
Power (1)
Power (2)
Electrical Units
Resistors (1)
Resistors (2)
Resistors (3)
Resistor Question (1)
Resistor Question (2)
Resistor
Tolerance (1)
Tolerance (2)
Conductivity
Semiconductors
Ohm’s Law
Current flow depends on (is proportional to) voltage and
resistance
V = I × R
or
R = V ÷ I
or
I = V ÷ R
If
V
is 20V, and
R
is 100Ω then
I
is 0.2A
Try other examples!
Course Guide Topics
Current
DC & AC Current
Voltage
Resistance
Ohm’s Law
Power (1)
Power (2)
Electrical Units
Resistors (1)
Resistors (2)
Resistors (3)
Resistor Question (1)
Resistor Question (2)
Resistor
Tolerance (1)
Tolerance (2)
Conductivity
Semiconductors