Physics

Problem

Four identical solenoids are wound with the same type of wire and have the dimensions listed below. Identify the one that will produce the strongest magnetic field when connected to a battery. P: 400 turns,

2\,\text{A}

current, air core Q: 600 turns,

1.5\,\text{A}

current, air core R: 400 turns,

2\,\text{A}

current, soft-iron core S: 600 turns,

1.5\,\text{A}

current, soft-iron core a) Q b) P c) S d) R

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