physics help...?
A waffle iron is connected to a 125-V outlet. The current through the iron is 0.2 Amperes. If the iron is on for 7 minutes while making a waffle:
(a) What amount of charge flows through the waffle iron?
( in coulombs)
(b) How much energy does the waffle iron convert into heat during this time?
(in joules)
(c) What electrical power does the waffle iron use?
(in joules/sec)
V= 125 V I= 0.2A t = 420 s
(a) charge (q) = It = 0.2*420 =84 C
(b) If the circuit is totally resistive, entire electric energy is converted to heat, i.e.
H=VIt = 105 J
(c) Power = VI = 25 J/s.
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