EXTENSION COURSE OF THE US ARMY SIGNAL SCHOOL
LESSON SOLUTIONS
SUBCOURSE 308................................Introduction to Electricity
All references are to the Attached Memorandum.
1.
b--para 1b
2.
d--para 2a(2)
3.
b--para 2b(2)
4.
a--para 2c
5.
d--para 3a
6.
d--para 3b
7.
c--para 3c, 5d(1), 5e(l)
In a parallel circuit the same voltage is applied across each element.
As each resistance is removed from the circuit, total resistance increases.
By
Ohm's law, as resistance increases with voltage remaining constant, current
decreases.
8.
a-para 5e(2)
9.
b--para 6b
Since resistor B in parallel with series resistors V and W yield a
parallel resistance of 5 ohms, the 10-volt source voltage will be divided equally
between resistors A and B.
10. d--para 7b
P = I2R = 52 x 150
P = 25 x 150 = 3,750 watts
11. c-para 9
308S
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