positive - Protons have ___ charge., negative - Electrons have ___ charge., attract - Opposite charges ___., repel - Like charges ___., induction - Charging by ___ is the rearrangement of electrons on a neutral object, caused by a nearby charged object., insulators - ___ are materials that do not allow electric current to pass through easily., static electricity - ___ is the accumulation of electrical charges on an object., electrons - Current is usually the flow of ___., high; low - Charges flow from ___ to ___ voltage., resistance - The tendency for a material to oppose the flow of electrons is called ___., increases - Making wires thinner, longer, or hotter ___ the resistance., examples of insulators - rubber, plastic, styrofoam, example of conductors - silver, copper, gold, steel, aluminum, amperes - The unit for measuring current is ___., ohms - The unit for measuring resistance is ___., volts - The unit for measuring voltage is ___., V=R·I - The formula used to calculate voltage is ___., R - Symbol for resistance., I - Symbol for current., V - Symbol for voltage. ,

Electric Charge and Current

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