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General Physics II

General Physics II

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Kirchhoff’s Current Law is applied at

Neither loop nor node

Which of the following is correct about resistors connected in series?

the power is reduced to zero

the current is divided proportionally

the source voltage is increased in proportion to the values of the resistors

the voltage is divided proportionally among all the resistors

100%

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The resistance of pure metals

Increases with an increase in temperature

Decreases with an increase in temperature

Remains the same with an increase in temperature

Becomes zero with an increase in temperature

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If three resistors (R₁, R₂, and R₃) are connected in parallel, the total current I supplied by the source is

I = V / R₁+ V / R₂ + V / R₃

I = V / (R₁ + R₂ + R₃)

I = V (R₁ + R₂ + R₃)

I = V / (1/ R₁ + 1/ R₂ + 1/ R₃)

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The unit of electrical conductivity is

mho/(metre)²

mho/metre

ohm/metre

ohm/(metre)²

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The reciprocal of resistance is

When two identical cells are connected in parallel, the equivalent EMF and internal resistance are:

EMF is halved, and internal resistance is the same as one cell

EMF is the same as one cell, and internal resistance is doubled

EMF is doubled, and internal resistance is halved

EMF is the same as one cell, and internal resistance is halved

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