What is the SI unit of electric charge?
Ohm
Newton
Ampere
Coulomb
Why does object A become negatively charged after it is rubbed with object B?
Electrons have moved from object A to object B
Electrons have moved from object B to object A
Protons have moved from object A to object B.
Protons have moved from object B to object A.
Two similar balloons hang side by side, on insulating threads, a short distance apart. They are both rubbed with the same dry cloth and become charged. Which diagram shows how the balloons hang after charging?
A
B
C
D
Electrostatics is the study of .
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