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Current Electricity
The maximum current rating for a 10 kΩ, 0.5 W resistor is
14.14 mA
28.28 mA
0.707 mA
7.07 mA
14.14 mA
28.28 mA
0.707 mA
7.07 mA
Answer
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Related Question
Current Electricity
Conductivity is the reciprocal of
None of the listed here
Current density
Resistance
Resistivity
None of the listed here
Current density
Resistance
Resistivity
Answer
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Current Electricity
With rise in temperature the resistance of pure metals
Decreases
Increases
First increases and then decreases
Remains constant
Decreases
Increases
First increases and then decreases
Remains constant
Answer
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Current Electricity
Semiconductors have _______temperature co-efficient of resistance.
Negative
Positive
Zero
None of the listed here
Negative
Positive
Zero
None of the listed here
Answer
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Current Electricity
Two lamps 100 W and 40 W are connected in series across 230 V. Which of the following statement is correct?
Both lamps will glow equally bright
40 W lamp will glow brighter
100 W lamp will glow brighter
40 W lamp will fuse
Both lamps will glow equally bright
40 W lamp will glow brighter
100 W lamp will glow brighter
40 W lamp will fuse
Answer
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Current Electricity
The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around
1.6 x 10-8 ω-m
1.2 x 10-8 ω-m
1.8 x 10-8 ω-m
1.4 x 10-8 ω-m
1.6 x 10-8 ω-m
1.2 x 10-8 ω-m
1.8 x 10-8 ω-m
1.4 x 10-8 ω-m
Answer
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