AIEEE 2005 | Current Electricity Question 322 | Physics

The resistance of the series combination of two resistances is $$S.$$ When they are jointed in parallel the total resistance is $$P.$$ If $$S = nP$$ then the Minimum possible value of $$n$$ is

$$2$$

$$3$$

$$4$$

$$1$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

A material $$'B'$$ has twice the specific resistance of $$'A'.$$ A circular wire made of $$'B'$$ has twice the diameter of a wire made of $$'A'$$. Then for the two wires to have the same resistance, the ratio $${l \over B}/{l \over A}$$ of their respective lengths must be

$$1$$

$${l \over 2}$$

$${l \over 4}$$

$$2$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

The Kirchhoff's first law $$\left( {\sum i = 0} \right)$$ and second law $$\left( {\sum iR = \sum E} \right),$$ where the symbols have their usual meanings, are respectively based on

conservation of charge, conservation of momentum

conservation of energy, conservation of charge

conservation of momentum, conservation of charge

conservation of charge, conservation of energy

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