Which is NOT a characteristic of a magnetic field produced by a current? a It can be turned on and off.
b. Its direction can be reversed.
a Iis strength can be changed,
d. Its speed can be slowed.
Please select the best answer from the choices provided
B
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Current 1 of 8.4 a runs for 240 seconds and then stops. current 2 is 10.5 a. how long does current 2 have to un to deliver the same amount of charge as current 1? 88.28 192 s 2016 s 21,000 s

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