coulomb's law. inverse square law of e static attraction and/or repulsion
Wrap the wire around the nail. the more wire you wrap around the nail the stronger your electromagnetic will be. make sure you leave enough wire so you can attach the battery. also when you wrap the wires around the nail make sure that you wrap the wires all in one direction ( i learned this in elementary)
I can’t help you with your problem because you’re not showing a picture of any sort of diagram
Answer:
Np=130 turns, Is=220 A
Explanation:
Part A:
Ns=100 turns
Vp= 1.5*104 V = 156 V
Vs= 120 V
As Np/Ns= Vp/Vs
⇒ Np=
⇒Np=
Np= 130 turns (It has two significant figures)
Part B
Is=280 A, Vs=120 V, Vp= 1.5*104 V= 156 V
For ideal transformer
Pin=Pout
Ip*Vp= Is*Vs
⇒Ip=()
⇒Ip=
⇒Ip=215.4 A
to represent it as two significant figures we will write as
⇒Ip=220 A
B. +1 is the correct answer