PSP-C4 Test

Elements that are shiny and good conductors of electricity are

• nonmetals
• metalloids
• metals

Lightning is

• harmless
• very large discharge of static electricity
• a low voltage of electric current

You measure the voltage difference of a circuit to be 3 V and the resistance to be 1500 Ω. What is the current in the circuit?

• 0.002 A
• 4500 A
• 500 A
• 2 A

Electric current in a circuit is measured in __.

• ohms
• amperes
• watts
• volts

What is the purpose of the moist paste in this battery?

• to transfer electrons to the zinc container
• to transfer electrons to the positive terminal
• to transfer electrons to the carbon rod

According to Ohm's law, as the resistance in a circuit ________, the current __________.

• increases, decreases
• decreases, decreases
• increases, increases
• decrease, remains constant

Ohm's Law deals with the relationship between voltage difference, current, and ___________.

• charging by induction
• electric field
• resistance

The negatively charged particles in an atom are called __________.

• protons
• negatrons
• neutrons
• electrons

Positive charges flow from

• high-voltage areas to low-voltage areas
• low-voltage areas to high-voltage areas
• low-resistance areas to high-resistance areas
• insulators to conductors

A blender is plugged into an outlet in which the voltage difference is 120 V. How much power does the blender use if the current in the blender is 7 A?

• 17.14 W
• 0.06 W
• 84 W
• 840 W