ETS 2 (PRE-UPS 2) PHYSICS SES DP024_SET 2

What happens to a resistor when the temperature is increased?

• Increase

• Decrease

• Constant

• Changes

Define electric current.

• The total charge, Q flowing through the area per unit time, t.

• The rate of capacitance flow through a conductor.

• The total, I flowing through the area per unit time, t.

• The rate of current flow through a conductor.

1 ampere of current is defined as __________.

• one coulomb of current passing through the surface area in one second.

• one coulomb of charge passing through the surface area in one second.

• one coulomb of charge passing through the conductor in one second.

• one coulomb of current passing through the conductor in one second.

Resistivity is defined as ________.

• the capacitance of a unit length per unit cross-sectional area of the material.

• the capacitance of a unit cross-sectional per unit length of the material.

• the resistance of a unit length per unit cross-sectional area of the material.

• the resistance of a unit cross-sectional area per unit length of the material.

Which of the following is not a good conductor?

• Copper

• Silver

• Aluminum

• Wood

You double the voltage across a certain conductor and you observe the current increases double times.  What can you conclude?

• Ohm’s law is obeyed since the current still increases when V increases

• Ohm’s law is not obeyed

• This has nothing to do with Ohm’s law

• None of the above

The current in the conductor _________.

• R₁ = R₂

• R₁ > R₂

• R₁ < R₂

The resistance in the two conductor ________.

• R₂ = R₃

• R₂ > R₃

• R₂ < R₃

Two resistors, R₁ and R₂ are connected in series. If R₂ > R₁, which among the statements is TRUE about the electric currents that passes through each resistor?

• I₁  > I₂

• I₁ = I₂

• I₁ < I₂

Two resistors, R₁ and R₂ are connected in parallel. If R₂ > R₁, which among the statements is TRUE about the electric voltage that is used up by each resistor?

• V₁  > V₂

• V₁ = V₂

• V₁ < V₂