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Problem 3:   Suppose you have a pocket calculator that draws a current of 0.21 mA from...

Problem 3:   Suppose you have a pocket calculator that draws a current of 0.21 mA from its 1.05-V battery.  Calculate the effective resistance of the pocket calculator, in kilohms.

R=_______

Problem 4:   The diameter of a specific copper wire is 8.11 mm, and has a resistivity of 1.72 × 10-8 Ω⋅m. Find the resistance of a 1.2 km length of such wire used for power transmission in Ω.

R=_______

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