Question
A student uses a piece of wool to charge a metal sphere. The student has to rub the sphere with the wool for several seconds to build up a charge.
Which of the following statements best describes this process?
Responses
A The sphere is positively charged with protons though induction.The sphere is positively charged with protons though induction.
B The sphere is negatively charged with electrons through friction.The sphere is negatively charged with electrons through friction.
C The sphere is negatively charged with electrons through induction.The sphere is negatively charged with electrons through induction.
D The sphere is positively charged with protons though friction.
Which of the following statements best describes this process?
Responses
A The sphere is positively charged with protons though induction.The sphere is positively charged with protons though induction.
B The sphere is negatively charged with electrons through friction.The sphere is negatively charged with electrons through friction.
C The sphere is negatively charged with electrons through induction.The sphere is negatively charged with electrons through induction.
D The sphere is positively charged with protons though friction.
Answers
GPT-4o mini
The best statement that describes the process of charging a metal sphere by rubbing it with wool is:
**B. The sphere is negatively charged with electrons through friction.**
When the wool is rubbed against the metal sphere, electrons are transferred from the wool to the sphere due to friction, resulting in the sphere gaining a negative charge. The process described here is known as triboelectric charging or charging by friction.
**B. The sphere is negatively charged with electrons through friction.**
When the wool is rubbed against the metal sphere, electrons are transferred from the wool to the sphere due to friction, resulting in the sphere gaining a negative charge. The process described here is known as triboelectric charging or charging by friction.