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QUESTION 77
As the temperature of a copper conductor increases, its resistance will:
(a) increase
(b) decrease
(c) remain the same
(d) increase or decrease depending on the direction of the current flow
QUESTION 78
When selecting a resistor for a circuit, the two factors which must be considered
are:
(a) the resistance and the current rating
(b) the resistance and the voltage rating
(c) the current and the voltage rating
(d) the resistance and the power rating
QUESTION 79
A series circuit is one in which there is:
(a) only one current path
(b) more than one current path
(c) equal voltage applied to each component connected in series
(d) only one component
QUESTION 80
Six identical lamps are connected in series and draw 2 amperes from a 12 volt
d.c. supply. If one lamp became open circuited, the current in the other five
lamps would be:
(a) 2 amperes
(b) 2.4 amperes
(c) 4.8 amperes
(d) zero amperes
QUESTION 81
The equivalent resistance of a series circuit is equal to the:
(a) resistance of the highest individual resistor
(b) supply voltage multiplied by the supply current
(c) supply voltage divided by the supply current
(d) resistance of the lowest individual resistor
QUESTION 82
In a parallel circuit, the current flowing through each resistor is:
(a) the same
(b) determined by the number of resistors in parallel
(c) determined by the value of each resistor and the voltage applied
(d) limited by the size of the power supply
DC Work Book
Page 17