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8903
The strength of the core of an electromagnet depends upon the material from which it is constructed and which of the following?
| | A) The number of turns of wire in the coil and the applied voltage. |
| * | B) The number of turns of wire in the coil and the amount of current (amperes) passing through the coil. |
| | C) The size (cross section) and the number of turns of wire in the coil and the applied voltage. |
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