<p>An electric toy with a resistance of 3.00 &#937; is operated by a 4.55 V&#160

Question

<p>An electric toy with a resistance of 3.00 &#937; is operated by a 4.55 V&#160;battery.</p>
<div class="partText">What current does the toy draw, assuming that the battery delivers a steady current for its lifetime of <span>5.50</span>&#160;<img src="http://session.masteringphysics.com/render?units=h" alt="h" align="middle" />, how much charge passed through the toy and how much energy was delivered to the toy?</div>

Explanation / Answer

the time t = 5.50 h                = 5.50(3600) the current , I = V/R                       = 4.55/3.0                       = 1.516 A the charge Q = It                      = 1.516*5.50*(3600)                      = 30030 C the charga passing through the toy is 30030C. the energy, E = Vit                      = 136636.5 J

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