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What is the current through the 3.0 \u03a9 resistor?

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The current through the circuit is the same for each resistor in a series circuit and is equal to the applied voltage divided by the equivalent resistance: I=VRS=9V90\u03a9=0.1A. Note that the sum of the potential drops across each resistor is equal to the voltage supplied by the battery.Nov 5, 2020');})();(function(){window.jsl.dh('_SnyPYMnaDoXn-gTJ_ouIBw39','
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The current after a resistor is the exact same as it was before the resistor. ... If you now add a resistor in series into this circuit \u2013 the current of the circuit will be smaller. So yes, the resistor does reduce the current. (But the current flowing into the resistor is still the same as the current flowing out.)Oct 9, 2018
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You take the basic formula of E = I x R, solve for R -> R = E / I. In other words, take the required voltage drop (in volts) and divide by the current (in amps) in the resistor and determine the resistance (R) in ohms.

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