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Unformatted text preview: V T = 120 V is maintained between points a and b. 2 1. Calculate R EQ for this circuit from the equation: Show your work using an equation and units. 1 R EQ = 1 R 1 + 1 R 2 = R EQ = 2. Calculate the total current ( I T ) by applying Ohm’s Law ( I = V/R ) between points a and b : I T = V T /R EQ = 3. Calculate the current ( I 1 ) through R 1 by applying Ohm’s Law between points c and d . I 1 = V T /R 1 = 4. Calculate the current ( I 2 ) through R 2 by applying Ohm’s Law between points e and f . I 2 = V T /R 2 = 5. Add the currents: I 1 + I 2 = How does this sum compare to the total currrent I T , leaving the battery? 3 6. What is the total power drawn from the voltage source? P T = V T I T = 7. What is the power used by R 1 ? P 1 = V T I 1 = 8. What is the power used by R 2 ? P 2 = V T I 2 = 9. Add the powers used by the two resistors together: P 1 + P 2 = How does this sum compare to the total power ( P T ) drawn from the power source? 4...
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 Spring '08
 Staff
 Physics, Work, Resistor, Electrical resistance, Parallel Circuits

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