Download P2_Physics_Summary_Topic 2

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts
no text concepts found
Transcript 
Keywords: Current, ammeter, in series, series circuit, parallel circuit, voltmeter
P2 Topic 2: Controlling and using electric
currents
Draw a simple series circuit with an
ammeter in place
Draw a circuit with a voltmeter connected
This topic looks at:
•How we measure current and voltage
•The relationship between voltage, current and resistance
•How the resistance of a circuit be changed
•How energy is transferred
V = I × R what does this formula mean and what are the units?
HIGHER what is potential difference and what are the units?
P = I × V what does this formula mean and what are the units?
Explain how changing the resistance in a circuit changes the current and how this can be
achieved using a variable resistor
E = I × V × t what does this formula mean and what are the
units?
Draw and annotate how current varies with potential
difference filament lamps
Draw and annotate how current varies with
potential difference diodes
V
I
Draw and annotate current varies with
potential difference for fixed resistors
V
I
V
I
Keywords: potential difference, resistance, ohms, filament lamps, diodes, thermistors, LDR’s, power
Related documents