Solenoid №1 has a length L,cross-sectional area A,and N turns.Solenoid №2 has a length 2L,cross-sectional area 2A,and 2N turns.Which solenoid has the greater magnetic field at its center when equal currents are going through them?

The magnetic field at the center of a solenoid is given by \(B = \mu_0 \frac{N}{L} I\), where \(N\) is the number of turns, \(L\) is the length, and \(I\) is the current. For both solenoids, when the current is equal, the ratio \(\frac{N}{L}\) remains constant (\(\frac{N}{L} = \frac{2N}{2L}\)), meaning the magnetic field strength will be the same for both.

A beam of electrons is sent in the positive x-direction in a region with a uniform magnetic field B in the positive y-direction and a uniform electric field E in the positive z-direction.At which of the following speeds would the electrons be deflected in the positive z-direction?

The answer of A beam of electrons is sent in...

Quiz 19: Magnetism Magnets

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