ICP Physics Pre-Test

The negatively charged particles in an atom are called _____

• protons

• neutrons

• electrons

• negatrons

Which of the two choices is necessary in order to create an electric circuit?

• an open circuit

• a closed circuit

This question has two parts. Choose the option that best answers both questions. The first listed answer is for the first question. The second listed answer is for the second question.
What is the current through this circuit? What is the power consumed by the lightbulb in this circuit?

• 0.80 A, 96 W

• 1.25 A, 1.25 kW

• 120 A, 1.25 W

• 30 A, 96 kW

Voltage difference is measured in ________.

• watts

• amperes

• volts

• ohms

Choose true or false for the following statement. Protons have a positive charge.

• True

• False

The unit used to describe resistance is the ________.

• ampere

• volt

• coulomb

• ohm

Which of the following correctly describes the relationship between power, current, and voltage?

Which of the following is a device designed to open an overloaded circuit and prevent overheating?

• transformer

• resistor

• circuit breaker

• magnet

Which is a statement of Ohm's law?

• Current equals potential difference divided by

  resistance

• Current equals resistance divided by potential

  difference

• Potential difference equals resistance divided

  by current

• Potential difference equals current divided by

  resistance

How can you tell if an electroscope is charged?

• An electroscope doesn't hold charge

• The leaves are together

• The leaves have 1 pointing down and 1

  pointing out

• Both leaves are separated