the table lists information about four devices.\n| device | wire loops | current (ma) | metal core |\n|…

the table lists information about four devices.\n| device | wire loops | current (ma) | metal core |\n| ---- | ---- | ---- | ---- |\n| w | 60 | 0.0 | yes |\n| x | 40 | 0.2 | yes |\n| y | 30 | 0.1 | no |\n| z | 20 | 0.1 | no |\nwhich lists the devices in order from greatest magnetic field strength to weakest?\no w, x, y, z\no w, z, y, x\no x, z, y, w\no x, y, z, w

the table lists information about four devices.\n| device | wire loops | current (ma) | metal core |\n| ---- | ---- | ---- | ---- |\n| w | 60 | 0.0 | yes |\n| x | 40 | 0.2 | yes |\n| y | 30 | 0.1 | no |\n| z | 20 | 0.1 | no |\nwhich lists the devices in order from greatest magnetic field strength to weakest?\no w, x, y, z\no w, z, y, x\no x, z, y, w\no x, y, z, w

Answer

Answer:

A. W, X, Y, Z

Explanation:

Step1: Understand magnetic field factors

Magnetic field strength of an electromagnet depends on number of wire - loops, current and presence of a metal core.

Step2: Analyze device W

Device W has 60 wire - loops, 0.0 mA current but has a metal core. Metal core can enhance magnetic field.

Step3: Analyze device X

Device X has 40 wire - loops and 0.2 mA current and a metal core. Current also contributes to magnetic field.

Step4: Analyze device Y

Device Y has 30 wire - loops, 0.1 mA current and no metal core.

Step5: Analyze device Z

Device Z has 20 wire - loops, 0.1 mA current and no metal core.

Step6: Compare magnetic field strengths

W has a large number of loops and a metal core. X has a good number of loops, current and a metal core. Y and Z have no metal core, and Y has more loops than Z. So the order from greatest to weakest magnetic field strength is W, X, Y, Z.