Electric circuits Flashcards
What is the unit of potential difference?
Volts (V)
What is the unit of current?
Amps (A)
What is the unit of resistance?
Ohm (Ω)
What is the unit of charge?
Coulomb (C)
What is the unit of power?
Watt (W)
What is the unit of time?
Second (s)
What is the unit of energy and work done?
Joules (J)
What is the name for a circuit with only one branch?
Series circuit
What is the name for a circuit with two or more branches?
Parallel circuit
what is the symbol for a bulb?
circle with a cross
what is the symbol for a resistor?
rectangle
what is the symbol for a cell?
–I I–
what is the symbol for a battery?
-I I–I I-
what is a symbol for a diode?
horizontal line, sideways triangle, vertical line, horizontal line
what is the symbol for a variable resistor?
rectangle with a diagonal line through going to the top right
what is the symbol for a fuse?
rectangle with horizontal line through
what is the symbol for an ammeter?
circle with an A in it
what is the symbol for a voltmeter?
circle with a V in it
what is symbol for a light dependent resistor (LDR)?
circle with a rectangle in it and two arrows pointing to the top right corner
what is the symbol for a thermistor?
rectangle with hockey stick
what component does a graph with a line that looks like an ‘S’ show?
filament bulb
what component does a graph with a straight line through zero show?
fixed resistor
what component does a graph that stays level then goes up show?
diode
write the equation which links current, time and charge
charge= current x time
write the equation which links current, potential difference and resistance
potential difference= current x resistance
write the equation which links potential difference, work done and charge
potential difference= work done /charge
