The copper wire of Example 25.1 has a cross-sectional area of 7.54X 10-7 m². It carries a current of 0.26 A. Find the electric field magnitude in the wire.
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- A copper wire that is 2.70 mm in radius with density 8.94 g/cm3 has a current of 6.10 A. The molar mass of copper is 63.5463 g/mol, and each copper atom contributes one free electron. What is the drift speed of the electrons in the copper wire?Consider a wire made of copper with conductivity 6.0 × 107 £¯¹m³¹, which has a circular cross-section of radius 0.56 mm. In a particular circuit, this wire carries a current of 4.5 A. What is the electric field, in volts per meter, inside this wire? If we replace this wire with a gold one of the same size, with conductivity 4.1 × 107 ¹m-¹, what will the electric field in the wire be?A current of 2.41 A flows through a 1.05 mm diameter copper wire that is connected to a capacitor plate. The current is directed toward the plate. Find the charge transferred to the plate in 1.10 x 10-3 s.
- A typical lightning bolt may last for 0.197s and transfer 1.19 ✕ 1020 electrons. Calculate the average current (in A) in the lightning bolt.A potential difference of 2.20 V will be applied to a 43.00 m length of 18-gauge silver wire (diameter = 0.0400 in). Calculate the magnitude of the electric field within the wire.A potential difference of 3.00 µV is set up across a 2.00 cm length of a wire (with resistivity of 10-8 2'm) that has the cross-section area of 106 m². How much charge drifts through a cross section of the wire in 4.0 ms? Give your answer in µC.