A copper wire has a length of 5.8 m and a diameter of 4.0 mm .
Under what load will its length increase by 0.40 mm ?
What is the resistance of a 2.9-m length of copper wire 1.8 mm in diameter? The resistivity of copper is 1.68×10−8Ω⋅m.
What is the resistance of a 5.9-m length of copper wire 1.2 mm in diameter? The resistivity of copper is 1.68×10−8Ω⋅m.
What is the resistance of a 4.9-m length of copper wire 1.9 mm in diameter? The resistivity of copper is 1.68×10−8Ω⋅m.
What is the resistance of a 5.9-m length of copper wire 1.1 mm in diameter? The resistivity of copper is 1.68×10−8Ω⋅m.
A bare copper wire of 5.8 mm in diameter can carry a current of 53 A without overheating. For this current, what is the magnitude of the magnetic field (in mT) at the surface of the wire?
. A copper wire with diameter 2.0 mm has a 0.23 V/m electric field along its length. Calculate the current in the wire.
Consider a straight piece of copper wire of length 8 m and diameter 8 mm that carries a current I = 4.5 A. There is a magnetic field of magnitude B directed perpendicular to the wire, and the magnetic force on the wire is just strong enough to “levitate” the wire (i.e., the magnetic force on the wire is equal to its weight). Find B. Hint: The density of copper is 9000 kg/m3 .
A 3.00-m length of copper wire at 20 ∘C has a 1.20-m-long section with diameter 1.2 mm and a 1.80-m-long section with diameter 0.60 mm . There is a current of 3.0 mA in the 1.2 mm -diameter section. A)What is the current in the 0.60 mm -diameter section? B)What is the magnitude of E⃗ in the 1.2 mm -diameter section? C)What is the magnitude of E⃗ in the 0.60 mm -diameter section? D)What is the potential difference between the ends of...
What length of copper wire .6 mm in diameter has a resistance of 1 Ohm?
Need help on these 3. stuck 1. A copper wire has a diameter of 2.415 mm. What magnitude current flows when the drift velocity is 3.79 mm/s? Take the density of copper to be 8.92x103 kg/m3. Give your answer in Amperes? 2. A jeweler uses a draw plate to stretch a wire to 9 times its original length. By what factor does its resistance increase?