Answer
$81\Omega$
Work Step by Step
As we know that
$V=\sqrt{2}V_rms$
$\implies V=\sqrt{2}(120)=170V$
Now we can find the required resistance as
$R=\frac{V}{I}$
We plug in the known values to obtain:
$R=\frac{170}{2.1}=81\Omega$
Physics Technology Update (4th Edition)
by Walker, James S.
Published by
Pearson
ISBN 10:
0-32190-308-0
ISBN 13:
978-0-32190-308-2
Chapter 24 - Alternating-Current Circuits - Problems and Conceptual Exercises - Page 867: 3
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