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Voltage Drop Across the Resistor

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Determine the voltage drop (from top to bottom) across the 16 ohm resistor in the circuit shown. Determine the voltage drop across the 4 ohm resistor. What is the voltage V?

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This complete solution includes calculations, answers and a brief explanation of voltage drop in the resistor. It uses the concepts of Ohm's Law and electric potential.

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1) Since 16Ohm and 8Ohm are series, according to Ohm's law, the voltage drop on 16Ohm is
12*(16/(16+8))=8V

2) Similarly, the voltage drop on 4Ohm is 12*(4/(4+8))=4V

3) We ...

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