Question 767698
{{{ R = V/I }}}
{{{ R = 12/.1 }}} ( .1 A = 100 mA )
{{{ R = 120 }}} 
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{{{ R = 24 / I }}}
{{{ 60 = 24 / I }}} ( R is 1/2 of what it was before )
{{{ I = 24/60 }}}
{{{ I = .4 }}} A
{{{ I = 400 }}} mA