A 15-? coffee maker and a 13-? frying pan are connected in series across a 120-V

Question

A 15-? coffee maker and a 13-? frying pan are connected in series across a 120-V source of voltage. A 25-? bread maker is also connected across the 120-V source and is in parallel with the series combination. Find the total current supplied by the source of voltage.

A 15-? coffee maker and a 13-? frying pan are connected in series across a 120-V source of voltage. A 25-? bread maker is also connected across the 120-V source and is in parallel with the series combination. Find the total current supplied by the source of voltage.

Explanation / Answer

Equivalent resistance of 15 and 13 =15+13=28 ohms

Net resistance=28x25/(28+25)

=13.207 ohms

Current i=V/Req

=120/13.207

=9.08 A

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