Circuit Diagrams!
When drawing electrical circuits remember these
rules:
•
Use straight lines for wires.
•
Use the correct symbols.
•
Make sure wires meet at corners.
•
Make sure wires connect to components.
•
Check components are in the right place.
1. In your book, using a pencil and a ruler draw a circuit diagram using appropriate
symbols for each of the circuits shown below.
Circuit 1
Circuit 3
Circuit 2
Circuit 4
2. Draw using the appropriate symbols, circuit diagrams to suit these descriptions:
a) Circuit 1 contains a 4.5 volt battery connected to an ammeter and two light
globes. Between the light globes there is a switch which is off.
b) Circuit 2 contains an ammeter, one light globe and a closed switch.
c) Circuit 3 contains a battery, an ammeter and three light globes. Between the
first and second globe is a switch and the ammeter. The switch is closed.
d) Circuit 4 contains 1.5 volt cell and two light globes. A voltmeter is connected
across (parallel) the first globe.
e) Circuit 5 contains a 6 volt battery and three globes. Between the second and
third globe is the ammeter and a switch which is on.
f) Circuit 6 contains a battery, a resistor, an ammeter, a light globe and a switch,
all in series, with a voltmeter connected across (parallel) the light globe. The
globe is not on.
3. Describe, in words, the electrical circuits represented by the diagrams below:
Circuit 1
Circuit 2
4. Classify each of the statements about this circuit below as true or false.
a) If switches A and B are closed,
only globes Q, R and P will
glow.
b) If switches C, D and E are
closed, only globes T, U, W, S
and P will glow.
c) If globes V, W, S and P are
glowing, switches C, E and F
must be closed.
d) If switch F only is closed, no
globes will light up.
e) If switches A, B and C are
closed, only globes P, R and T will glow.
f) The maximum number of globes that will glow if only one switch is closed is four.