MO VALLEY TEST 1-4 QUESTIONS & ANSWERS
1. A circuit is defined as a completed path for voltage to flow from a source of
voltage through a load and back to the source.
T/F: Fasle
2. A complete circuit or path is often referred to as a(n) circuit.:
closed
3. Before current can flow in a circuit, the circuit must be
closed. T/F: True
4. Many non-electrical people often call an open circuit a(n)
circ
uit.: short
5. When current does not flow in a circuit, it is called a(n) ? circuit.: open
6. when a circuit is open, voltage does not exist in the
circuit. T/F.: False
7. when current finds an alternate path back to the source, rather than taking a
path through the load, it is called a(n) ? circuit.: short
8. a short circuit causes a drastic decrease in the ? of the cirucit and could cause
the ? to be dangerously high.: resistance/current flow
9. Ohm's Law states that it takes 1 amp to push 1 ohm of resistance through
1 volt.
T/F.: False
10. Current flow in an electrical circuit is caused by ? and opposed by ? .: voltage /
resistance
11. what mathematical equation is used where I and R are known, and E is to
be determined?
,a. I=ExR
b. E=I/R
c. R=E/I
d. E=IxR: d. E=IxR
12. what mathematical equation is used where E and R are known, and I is to
be determined?
a. I=ExR
b. E=IxR
c. R=E/I
d. I=E/R: d. I=E/R
,13. what mathematical equation is used where E and I are known, and R is to
be determined?
a. I=ExR
b. R=I/E
c. E=IxR
d. R=E/I: d. R=E/I
14. For a given circuit, if the source voltage is increased, the current
flowing through the resistance increases by the same percent, and thus is
directly proportional.
T/F: True
15. For a given circuit, if the resistance is decreased, the net result will be a
decrease in current flow by the same percent, and thus the current is inversely
related to the resistance in the circuit.
T/F: False
16. prefix multipliers are used to simplify the printing and use of small or large
figures.
T/F: True
17. The value 200,000 ohms can also be expressed as ? .
a. 2k
b. 20k
c. 200k
d. 200M: c. 200k ohms
18. the metric prefix for micro is ? .
a. M
, b. m
c. µ: c. µ
19. The value 0.000001 Amp can also be expressed as ? .
a. 0.001 mA
b. 0.01 mA
c. 1µA
d. a. or c.: d. a. or c.
1. A circuit is defined as a completed path for voltage to flow from a source of
voltage through a load and back to the source.
T/F: Fasle
2. A complete circuit or path is often referred to as a(n) circuit.:
closed
3. Before current can flow in a circuit, the circuit must be
closed. T/F: True
4. Many non-electrical people often call an open circuit a(n)
circ
uit.: short
5. When current does not flow in a circuit, it is called a(n) ? circuit.: open
6. when a circuit is open, voltage does not exist in the
circuit. T/F.: False
7. when current finds an alternate path back to the source, rather than taking a
path through the load, it is called a(n) ? circuit.: short
8. a short circuit causes a drastic decrease in the ? of the cirucit and could cause
the ? to be dangerously high.: resistance/current flow
9. Ohm's Law states that it takes 1 amp to push 1 ohm of resistance through
1 volt.
T/F.: False
10. Current flow in an electrical circuit is caused by ? and opposed by ? .: voltage /
resistance
11. what mathematical equation is used where I and R are known, and E is to
be determined?
,a. I=ExR
b. E=I/R
c. R=E/I
d. E=IxR: d. E=IxR
12. what mathematical equation is used where E and R are known, and I is to
be determined?
a. I=ExR
b. E=IxR
c. R=E/I
d. I=E/R: d. I=E/R
,13. what mathematical equation is used where E and I are known, and R is to
be determined?
a. I=ExR
b. R=I/E
c. E=IxR
d. R=E/I: d. R=E/I
14. For a given circuit, if the source voltage is increased, the current
flowing through the resistance increases by the same percent, and thus is
directly proportional.
T/F: True
15. For a given circuit, if the resistance is decreased, the net result will be a
decrease in current flow by the same percent, and thus the current is inversely
related to the resistance in the circuit.
T/F: False
16. prefix multipliers are used to simplify the printing and use of small or large
figures.
T/F: True
17. The value 200,000 ohms can also be expressed as ? .
a. 2k
b. 20k
c. 200k
d. 200M: c. 200k ohms
18. the metric prefix for micro is ? .
a. M
, b. m
c. µ: c. µ
19. The value 0.000001 Amp can also be expressed as ? .
a. 0.001 mA
b. 0.01 mA
c. 1µA
d. a. or c.: d. a. or c.
