1. How many turns of a coil are necessary to produce a 0.25-T magnetic field inside a 50-cm-long solenoid that carries a current of 20 A? a. 3,000 turns b. 4,000 turns c. 1,000 turns d. 5,000 turns e. 2,000 turns

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1. How many turns of a coil are necessary to produce a 0.25-T magnetic field inside a 50-cm-long solenoid
that carries a current of 20 A?
a. 3,000 turns
b. 4,000 turns
c. 1,000 turns
d. 5,000 turns
e. 2,000 turns
Transcribed Image Text:1. How many turns of a coil are necessary to produce a 0.25-T magnetic field inside a 50-cm-long solenoid that carries a current of 20 A? a. 3,000 turns b. 4,000 turns c. 1,000 turns d. 5,000 turns e. 2,000 turns
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