question archive A wire has a current density of 7
A wire has a current density of 7
Subject:PhysicsPrice:2.87 Bought7
A wire has a current density of 7.81 × 106 A/m2. If the cross-sectional area of the wire is 1.23 mm2, what current does the wire carry?
= ___________ A
With this current, how much time is required for 3.91 × 1020 electrons to pass any point on the wire?
= ___________ s
