1.which of the three basic electrical quantities will decrease if additional load are connected in a series circuit?
a. electrical current
b. electrical resistance
c. voltage
d. both A and C

2. what are the devices found at home that is connected in a series connection?
A. Switch. B. Circuit breaker. C. Fuse.
D. Wall outlet. E. Refrigerator.
F. Lightings

3. fuse provides which of the following protection?
a. only overload protection
b. only short circuit protection
c. both overload and short circuit
d. none of these

4. how do fuses work?
a. by having an electromagnet that will break a circuit if the current gets too high
b. by having pieces of metal wire that melt when the current gets too high
c. by having pieces of metal wire that melt when current gets too low
d. by having an electromagnet tattoo break a circuit if the current gets too low

5. if the maximum safe current capacity of the wire is 20 amperes, what should be the rating of the circuit breaker?
a. 18 amperes
b. 20 amperes
c. 22 amperes
d. 25 amperes

6. which of the following is the necessary function of earthing or grounding?
a. protection against the danger of electric shock
b. protection against the high temperature of the conductors
c. protection against voltage fluctuation
d. protection against overloading

7. how fuse and circuit breakers protect houses from fire due to short circuit or overloading?
a. when the current rise and the wires overheat fuse and circuit breakers serves as a wire cooler
b. when the current rise and the wires overheat fuse and circuit breakers serves as a heat absorber
c. when the current rise and the wires overheat fuse and circuit breaker serving as the cooling system of the house
d. when the current rise and the wires overheat fuse and circuit breaker break the circuit and stop the heavy surge of current that heated the wire ​