Two loops of wire are arranged so that a changing current in one, the primary, will induce a current in the other, the secondary. The secondary loop has twice as many turns as the primary loop. As long as the current in the primary is steady at 3.0 A, the current in the secondary will be:

the current in the secondary loop will be = 1.5A

Explanation:

In an ideal transformer, conservation of energy requires that power out to equal power in Thus, Ip x Vp = Vs x Is, or Ip = Vs x Is / Vp.

Since Vs = Ns x Vp / Np, Ip can be rewritten as Ip = ( Ns x Vp / Np ) x Is / Vp, or equivalently, Ip = Ns x Is / Np, or Ns x Is = Np x Ip

Thus, Np x Ip = Ns x Is

Where;

Ip = current in primary loop = 3A

Is = current in secondary loop

Np = number of turns in primary loop = n

Ns = number of turns in secondary loop = 3n

Now, we are told that the current in the primary loop is 3 A. So, Ip = 3A

We are also told that the secondary loop has twice as many turns as the primary loop. Thus, let's call the number of of turns in primary loop "y" Thus, Np = y and Ns = 2y

Let's plug these values into;

Np x Ip = Ns x Is

y x 3 = 2y x Is

Divide both sides by 2y;

3y/2y = 2y(Is)/2y

2y will cancel out, on the right and y will cancel out on the left,

so Is = 3/2A = 1.5A

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle