Electrostatics

An inflated rubber balloon is positively charged. What can we assume about the number of charged particles?

• protons = electrons

• protons > electrons

• protons < electrons

An empty soda can is positively charged. What can we assume about the number of charged particles?

• protons = electrons

• protons > electrons

• protons < electrons

A styrofoam plate is negatively charged. What can we assume about the number of charged particles?

• protons = electrons

• protons > electrons

• protons < electrons

An aluminum tray is negatively charged. What can we assume about the number of charged particles?

• protons = electrons

• protons > electrons

• protons < electrons

An aluminum tray is negatively charged. Which of the following options best explains why this charge is present?

• electrons were gained

• electrons were lost

• protons were gained

• protons were lost

A styrofoam plate is negatively charged. Which of the following options best explains why this charge is present?

• electrons were gained

• electrons were lost

• protons were gained

• protons were lost

An aluminum tray is negatively charged when rubbed with a feather duster. What can we assume about the charge on the feather duster?

• electrically neutral

• positively charged

• negatively charged

Two balloons are hung from the ceiling by threads. Balloon A is electrically neutral and has no effect on Balloon B. What is the charge of Balloon B? Select all that could be true.

• positively charged

• negatively charged

• electrically neutral

Two balloons are hung from the ceiling by threads. Balloon A is positively charged and attracts Balloon B. What is the charge of Balloon B? Select all that could be true.

• positively charged

• negatively charged

• electrically neutral

Two balloons are hung from the ceiling by threads. Balloon A is negatively charged and attracts Balloon B. What is the charge of Balloon B? Select all that could be true.

• positively charged

• negatively charged

• electrically neutral