Solution to Frame 126
FRAME 127
Solve this problem:
I=E
R
R = E: E = 15 volts, I = 3 amp
I
R = _______________
Solution to Frame 127
FRAME 128
Solve this problem:
R = E = 15
I
3
E = IR: I = 3 amp, R = 3 ohms
R = 5 ohms
E = __________________
Solution to Frame 128
FRAME 129
The basic formula for Ohm's law (I = E) expresses
E = IR
R
the basic relationship between current and voltage.
E=3x3
That is, if the voltage is increased, the current will
___________. If the voltage is decreased, the
E = 9 volts
current will ________________.
Solution to Frame 129
FRAME 130
Now let us work with some actual circuit drawings.
increase
decrease
MD0902
1-31