How numerous times greater is the diameter of wire

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Q1. Two wires - A and B - with circular cross sections have identical lengths and are made of the same material. Yet, wire A has four times the resistance of wire B. how numerous times greater is the diameter of wire B than wire A?

Q2. You're carrying a 4 m long, 23 poles to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold other end of the pole 35 from its tip. How much force should you exert to keep the pole motionless in a horizontal position?

Reference no: EM1344468

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