For what value of the spin magnetic quantum number is the z-component of the energy of an electron in an external magnetic field of 0.724 T equal to 6.71E-24 J

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The discovery of the electron as a subatomic particle was a result of

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit