Current, Voltage, Resistance. Flashcards
Fill in the gaps:
Current is the ____ of electrons, the bigger the ____ the more electrons that flow. the current is measured in _____ using an _____ connected in series.
answers in order: flow, current, amperes, ammeter
_____ is a measure how big a ____ _____ are given as they leave the _____ or ____. the bigger voltage the bigger push. Electrons only ____ because of this push (____). It is measured in ____ using a ______ connected in ______.
voltage volts push voltmeter battery cell electrons flow (voltage)
What is a series circuit?
A series circuit is when there is one route for currents to take
where are ammeters always placed? parallel or series
series
the current is always the same wherever you measure it? TRUE OR FALSE
TRUE
Is the sum of the voltages for each component equal to the one across the battery or cell?
yes, e.g component 2= 0.75v +
component 3= 0.75v
component 1= 1.5v
Is the current that leaves the cell or battery the (same/different) as it returns to the battery or cell?
It is the SAME.
The current (does/does not) get used up by a circuit?
It does get used up by a circuit.
The____ of the currents in the branches in the ____to the current that leaves the cell or battery?
1) sum
2) equal
Explain what this means in a parallel circuit?
A1= A2+A3=A4
In a parallel circuit A2+A3 are equal to A1 on one side of the circuit which is also equal to A4 on the other side of the parallel circuit. E.g: A1=0.8, A2=0.4, A3=0.4, A4=0.8
The voltage across each branch is the same as the one across the cell/battery? TRUE OR FALSE Give an example?
TRUE, because in a parallel circuit the voltmeters are parallel to each other E.g: V1=V2=V3.
When there is more than one route for the currents to take it is called a…?
Parallel circuit.
Resistance is a measure of how___/____ it is for current to____.
1) easy/hard
2) flow
Resistance can be calculated by diving voltage and current? TRUE OR FALSE
TRUE
what is the unit of resistance?
Ohms
