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Physics 10 Chapter 14 - Current and Electricity - 30
1.
To work out the energy transferred; the time must be in...................?
a) Hours
b) Seconds
c) Milli-seconds
d) Minutes
2.
To work out the energy transferred; the power must be in...................?
a) Milliwatts
b) Watts
c) Horse power
d) Kilowatts
3.
To work out the cost, the time must be in...................?
a) Milli-seconds
b) Seconds
c) Hours
d) Minutes
4.
To work out the cost, the power must be in...................?
a) Kilowatts
b) Horse power
c) Milliwatts
d) Watts
5.
What is the current called that is derived from a cell?
a) Direct current
b) Variable current
c) M.C. current
d) Alternating current
6.
What is CORRECT statement about D.C. current?
a) The positive and negative terminals have variable polarity
b) The positive terminal is not present in d.c source
c) The positive and negative terminals have fixed polarity
d) The negative terminal is not present in d.c source
7.
What is CORRECT statement about D.C. current?
a) Level of d.c remains constant with time
b) Level of d.c decreases with time
c) Level of d.c increases with time
d) Level of d.c increases with voltage
8.
What is the current called which changes its polarity again and again?
a) Uni-directional current
b) M.C. current
c) Alternating current
d) Direct current
9.
What is the current called that changes direction after equal intervals of time?
a) Uni-directional current
b) Alternating current
c) M.C. current
d) Direct current
10.
What is the current called that is derived from a battery?
a) Direct current
b) Micro current
c) Alternating current
d) Variable current
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