Current ElectricityEveryday Science
One kilowatt-hour is equal to
36×105 J
32×105 J
30×105 J
35×105 J
36×105 J
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Vitamin C is soluble inA. fat
B. water
C. ethers
D. phenols
The value of resistance in insulators is
A. small
B. large
C. zero
D. can not be determined
The resistance of a copper wire if it’s length is 1 m and its diameter is 2 mm is
A. 5.4 x 10-3 Ω
B. 5 Ω
C. 4 Ω
D. 2 Ω
The wire which carries no electricity is called
A. Earth/ground wire
B. livewire
C. neutral wire
D. delta wire
In a circuit 3 resistors 2Ω, 3Ω, 6Ω are connected (in parallel combination) across a battery of 6V, then the total current of the circuit should be
A. 12A
B. 3A
C. 6A
D. 2A
The specific resistance of iron is
A. 5.25 × 10-8
B. 1.69 × 10-8
C. 9.8 × 10-8
D. 2.75 × 10-8
The density of air in the atmosphere is
A. uniform
B. not uniform
C. zero
D. none of above
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