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Question-101. What happens when electrically charged objects are brought close together?
Answer-101: When two electrically charged objects are brought close together they exert a force on each other.
Question-102. What is the name of the force that exists between charged objects and what type of force is it?
Answer-102: Electrostatic, Non-contact (the objects do not need to touch)
Question-103. What happens to two objects with the same type of charge?
Answer-103: They repel each other.
Question-104. What happens to two objects with different types of charge?
Answer-104: They are attracted to each other.
Question-105. What is an electric field?
Answer-105: A field created around a sphere of charge
Question-106. What happens if another charged object is placed in the field?
Answer-106: A second charged object placed in the field experiences a force.
Question-107. Where is the charge strongest in an electric field?
Answer-107: The closer an object is to the charged sphere, the stronger the force
Question-108. In what direction do field lines flow in a positive and negative charge?
Answer-108: Out of a positive object, into a negative object
Question-109. How do field lines show the strength of a field?
Answer-109: The closer the lines the stronger the field
Question-110. When will static cause a spark?
Answer-110: If there is a high enough potential difference between a charged objecta nd the earth/earthed object (0V)
Question-111. What causes the spark?
Answer-111: An electric field occurs between the charged object and the earth object. Air particles in the electric field are ionised (electrons are removed) Ionised air is a conductor and so a current flows between the charged object and the earthed object
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