What is the equation for current?
Q/t
charge÷time
What is the equation for p.d.? (charge)
W/Q
work done÷charge
What is the equation for p.d.? (resistance)
I×R
current×resistance
What are the 3 equations of power?
V×I
p.d.×current
I²×R
current²×resistance
Q×V
Energey transferred=Charge×p.d.
What is the symbol for, units and symbol of the unit for V?
the symbol for p.d.
It is measured in volts
The symbol for volts is V
What is the symbol for, the units and the symbol for the units for I?
the symbol for current
It is measured in Amps
The symbol for Amps is A
What is the symbol for, the units and the symbol for the units for R?
the symbol for resistance
It is measured in ohms
The symbols for ohms is the horseshoe thing
What is the symbol for, the units and the symbol for the units for Q?
the symbol for charge
It is measured in coulomb
The symbol for coulomb is C
What is the symbol for, the units and the symbol for the units for t?
the symbol for time
It is measured in seconds
The symbol for seconds is s
What is 1W equal to?
1j/s