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UkoKoshka [18]
2 years ago
14

PLEASE ANSWER ASAP!!

Physics
2 answers:
liq [111]2 years ago
8 0

As we know that magnetic field strength due to solenoid is given by

B = \frac{\mu_0 N i}{L}

here we know that

\mu_0 = permeability of air medium

N = number of turns

L = length of solenoid

i = electric current

Now as we enter the iron rod into the solenoid the medium will get change that will increase the permeability

so with the iron rod we will have

B = \frac{\mu_0 \mu_r N i}{L}

so correct answer will be

<u>It increases the magnetic field’s strength. </u>

Alina [70]2 years ago
6 0
It increases the magnetic field strength
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