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1) A 5-year old has nothing better to do than to connect three resistors to a...

1) A 5-year old has nothing better to do than

1) A 5-year old has nothing better to do than to connect three resistors to a voltage source as shown. The resistors are R1=42 ?, R2=68 ?, and R3=20 ?, respectively, and the voltage source has 2 Volts. What is the total resistance?

2) What is the current through the voltage source?

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Answer #1

I will guess R1 and R2 are the two in parallel...

Thus R = 1/42 + 1/68

R = 26 Ohms

Add that to the 20 Ohm in series and R total = 46 Ohms

Part B)

V = IR

2 = I(46)

I = .0435 Amps

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