2. Resistance and Resistivity __________ a) From the values you calculate in pro

Question

2. Resistance and Resistivity

__________ a) From the values you calculate in procedure 2: as the length of a wire increases resistance of the wire will
A) increase B) decrease C) remain the same

__________ b) From the values you calculate in procedure 2: as the length of a wire increases, the resistivity of the wire will
A) increase B) decrease C) remain the same

__________ c) From the values you calculate in procedure 3: as the cross-sectional area of a wire increases, the resistance of the wire will
A) increase B) decrease C) remain the same

__________ d) From the values you calculate in procedure 3: as the cross-sectional area of a wire increases, the resistivity of the wire will
A) increase B) decrease C) remain the same

3. Resistivity

__________ a) Look at the equation for resistance. The units of resistivity are
A) ohm-m B) ohm/m C) ohm-m2 D) ohm/m2

__________ b) For the electric wires in the walls of a house, we should use wires of
A) high resistivity B) low resistivity

Explain your answer:
Thanks again!

Explanation / Answer

R=l/A

increase

decrease

decrease

increase

ohm-m

low resitivity

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