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A long thin wire is connected across the terminals of a battery, and a current I0 passes through it. The wire is then replaced by another wire that is made of the same material, but is twice the length and half the radius of the original wire. The current that will pass through the new wire is

Sagot :

plumeus01

Answer:

less

Explanation:

according to ohm's law (V=IR) the equation for current is I = V / R. the voltage is constant because the same battery is used. the resistance of a wire increases with length as well as with a smaller diameter, therefore this longer, thinner wire will have a much higher resistance. according to the equation, as resistance goes up, current goes down.

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