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Current Electricity

Current Electricity
The resistance of conductor varies inversely as

Resistivity
Area of cross-section
Length
Temperature

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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

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

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Current Electricity
Three resistance of 10 ohms, 15 ohms, and 30 ohm are connected in parallel. The total resistance of the combination is

10 ohms
5 ohms
15 ohms
55 ohms

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Current Electricity
Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be

9 times
1/3 times
1/9 times
3 times

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Current Electricity
Conductivity is the reciprocal of

None of the listed here
Resistance
Resistivity
Current density

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Current Electricity
The resistance of a few meters of wire conductor in closed electrical circuit is

Very high
Low
Practically zero
High

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