Which is the equivalent of the quantity electric potential dimensionally?

• force/charge

• force × charge

• electric field/distance

• electric field × distance

While touching the Van de Graaff generator, why does your hair fly up as it starts charging?

• because the opposite charge is transferred to the hair

• because the charge of the generator is transferred to the hair

• because the charge of the hair is transferred to the generator

• because the opposite charge of the hair is transferred to the generator

Which of the following best describes electric potential energy?

• charge per unit distance

• electric potential per unit charge

• the amount of work needed to move a unit charge

• the capacity for doing work which arises from position or configuration

Which of the following describes a parallel connection of capacitors?

• The total charge is equal to the individual charges.

• Total voltage is equal to the sum of the voltage drop in each capacitor.

• The equivalent capacitance is equal to the sum of the individual capacitance.

• The reciprocal of the equivalent capacitance is equal to the sum of the reciprocal individual.

Increasing the voltage across a two-plate capacitor will produce what effect on the capacitor?

• decrease charge

• increase charge

• decrease capacitance

• increase capacitance

What will happen to the charges and electric field when inserted a dielectric material in a capacitor?

• The charges and electric field increase.

• The charges and electric field decrease.

• The charges increases and the electric field remain the same.

• The charges remain the same and the electric field decreases.

Which of the following types of electric current flows in one direction ONLY?

• alternating current

• electron current

• direct current

• steady current

Why is copper wire commonly used for electrical wirings?

• because of higher resistivity

• because of higher conductivity

• because it is a unique conductor

• because it is more common than nichrome wire

Which of the following describes both electromotive force and potential difference?

• Their symbol is ΔV.

• Their SI unit is volts.

• They transmit current in and out of the cell.

• They cause electromagnetic field and gravity.

Which of the following best describes Ohm’s Law?

• As the voltage increases, the current decreases.

• The higher the resistance, the lower the voltage.

• The higher the resistance, the higher the current.

• As the voltage increases, the current also increases.