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Current Electricity

Current Electricity
A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is

0.3%
0.4%
None of the listed here
0.2%

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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
7.07 mA
0.707 mA

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Current Electricity
In which of the following substances the resistance decreases with increase in temperature?

Silver
Carbon
Constantan
Copper

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Current Electricity
The flow of current in solids is due to

Electrons and ions
Nucleus
Electrons
Atoms

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Current Electricity
Which of the following statement is true both for a series and a parallel D.C. circuit?

Power are additive
Elements have individual currents
Currents are additive
Voltages are additive

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Current Electricity
A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is

6.4 A, 6.9 A
4.6 A, 9.6 A
6.4 A, 9.6 A
4.6 A, 6.9 A

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