How much more mass does 12mg have than 12g

Explanation:

Given that,

First mass,

Other mass,

We know that,

1 Megagram (Mg) = 10⁶ grams (g)

So,

Using unitary method,

So,

So, the mass of 12 Mg is more than 12 grams. Hence, this is the required solution.                          

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adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.