{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Physics 1 Problem Solutions 258

# Physics 1 Problem Solutions 258 - 254 Chapt 33 Alternating...

This preview shows page 1. Sign up to view the full content.

254 Chapt. 33 Alternating Current or AC power equality result to derive the relationship between the primary current I p and the secondary current I s . Assume that the power in both coils obeys P = I Δ V , where I is the current through the device and Δ V is the potential change across the device (which for ideal coils is the emf). c) Find the formula that relates N p , I p N s , and I s . Then give a combined ratio formula for number of coil turns, coil emfs, and coil currents. 033 qfull 00610 1 3 0 easy math: transformer power e±ciency 4. Using high transmission potential and low transmission current is energy e±cient: their is less energy lost in heating the transmission wires. a) A power station outputs power P at (RMS) potential E . The transmission wire has resistance R . The power lost to heat in the wire is P loss Find the formula for relative power loss P loss /P in terms of P , R , and E . HINT: Assume potential and current are in phase: i.e., assume that the formula P
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Ask a homework question - tutors are online