What is the equivalent resistance

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1. What is the electric field around a 1 x 10-9 Coulomb charge at 2 m, when no other charges are present?

2. If you double the area of a parallel plate capacitor and quadruple the distance between the plates, what affect does this have on the capacitance?

3. A copper wire of length 0.5 m and area 2 x 10-9 m2 is connected to a 12 V battery. What current flows through the wire? The resistivity of copper is 1.7 x 10-8 Ωm.

4. Fifty 100 Ohm resistors are in series. What is the equivalent resistance? What is the potential difference across each resistor if they are plugged into a 100 V power supply?

Reference no: EM132797366

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