PHYS 0847 Lecture 6: Physics - Chapter 6
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Ele(cid:272)t(cid:396)i(cid:272) (cid:272)ha(cid:396)ge (cid:373)easu(cid:396)es the st(cid:396)e(cid:374)gth of a(cid:374) o(cid:271)je(cid:272)t"s att(cid:396)a(cid:272)tio(cid:374)s a(cid:374)d (cid:396)epulsio(cid:374)s to othe(cid:396) (cid:272)ha(cid:396)ged objects. Electrons and protons therefore attract this is why atoms form. This is (cid:449)h(cid:455) the(cid:455) do(cid:374)"t (cid:373)atte(cid:396) (cid:373)u(cid:272)h fo(cid:396) (cid:373)ost p(cid:396)o(cid:272)esses, a(cid:374)d diffe(cid:396)e(cid:374)t isotopes are still considered to be the same element. Recall: protons and neutrons are made of quarks (same quarks but different combinations), but electrons cannot be divided into smaller parts. The two most common quarks are called up and down quarks. (up is 2/3 and down is -1/3) Electricity refers to the movement of changed objects (usually electrons). Electrons very light, sometimes mobile, carry a lot of charge. Electricity analogy flowing water although charge can be stationary (like a puddle or lake), it can also flow in currents (like water flowing through a pipe) Current flowing charge ; just as water current could be measured in gallons per second, electric current is measured in electric charge per second (amps).
