Electric circuits

What is Current measured in?
Amps
1 of 20
Where is the ammeter placed?
In series with components
2 of 20
What is the rule about current in a series circuit?
Current is the same at any point in a series circuit
3 of 20
What happens to current in a parallel circuit?
It splits at a junction
4 of 20
What is voltage measured in?
Voltz
5 of 20
Where in the circuit is the voltmeter placed?
In parallel with the component
6 of 20
Give 2 advantages of mains electricity supplies being connected in parallel
If one component faults, the others will continue to work & each component has the same voltage through it
7 of 20
What is the rule about voltage in a series circuit?
It adds up to the supply voltage
8 of 20
What is the rule about voltage in a parallel circuit?
Voltage is the same across each components
9 of 20
Give an equation for finding current
Current= voltage / resistance
10 of 20
What do thermistors decrease their resistance with?
Temperature (Negative temperature co-efficient)
11 of 20
What can thermistors be used as in a circuit?
Temperature sensors
12 of 20
What do LDRs decrease their resistance with?
Increasing light intensity
13 of 20
What can LDRs be used as in circuits?
light sensors
14 of 20
What do diodes behave as?
One way electrical gates
15 of 20
What do diodes do?
Only allow current to flow through them in one direction
16 of 20
What happens to resistance and current of a circuit when you combine resistors?
Total resistance of the circuit increases, while current decreases
17 of 20
Give the equation for finding total resistance of a circuit
R=R1+R2
18 of 20
What happens to the total resistance of a circuit when resistors are combined in parallel?
Total resistance of the circuit decreases
19 of 20
Give the definition of electrical power
The energy transferred per unit time
20 of 20

Other cards in this set

Card 2

Front

Where is the ammeter placed?

Back

In series with components

Card 3

Front

What is the rule about current in a series circuit?

Card 4

Front

What happens to current in a parallel circuit?

Card 5

Front

What is voltage measured in?