What is the power dissipated by a 12 Ohm resistor when 2A of current run through it?
We know P=IV and that V=IR. Therefore as we are only given I and R in the question we can make the substitution for V so that P=I2R.
By plugging in the numbers we get: P=22x 12= 48W
(W=Watts, unit of Power)
OT
Related Physics GCSE answers
All answers ▸Briefly outline how a skydiver reaches terminal velocity.
what is a half life of a substance and how can you work it out.
Draw the circuit that could be used to investigate how the current through a filament lamp affects its resistance. How could it be used to investigate this? (6 marks)
Explain how Pumped-storage hydropower (PSH) can store energy.