Two different materials, rubbed against each other acquired opposite charges when separated. This is an example of charging by? by Sunday | Jan 24 | Physics WAEC | 0 comments A. induction B. friction C. conduction D. convection Correct Answer: Option B B. friction Users Also Read These:When a person holds a negatively charges metal rod…A boatman facing north wants to cross a flowing…WHAT ARE THE TWO METHODS OF CHARGING A LEAD-ACID…In a firm, three employees earns N5,500 each, four…A handbag containing some load weighing 162N is…