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Name:___________________________________ Date:______________ Hour: 1 2 3 4 5 6 Blue Book outline, Chapter 13, section 2 – Electric Current A. The flow of charges through a wire or conductor is called electric ________________. 1. Current is usually the flow of _______________, measured in ________________ (A). 2. Charges flow from _____________ voltage to ______________ voltage. 3. Voltage difference is the push that moves charges, measured in ___________ (V). 4. For charges to flow, the wire must always be connected in a closed path, or complete ______________. B. A ____________ source provides the electric pressure causing charges to flow. C. Resistance is the tendency for a material to oppose the flow of ______________, changing ________________ energy into thermal energy and light. 1. All materials have some electrical _______________, measured in _____________ (Ω). 2. Making wires thinner, longer, or hotter _______________ their resistance. 3. Making wires thicker, shorter, or cooler _______________ their resistance. D. Ohm’s law says the __________________ in a circuit equals the _________________ difference divided by the ________________. 1. Current (__) is directly related to voltage (__). 2. Current (__) is inversely related to resistance (__). 3. The equation that explains the relationship of these 3 pieces of a circuit is ___ = ___ / ___