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DK2ZA > TECH 16.10.06 17:55l 36 Lines 1115 Bytes #999 (99) @ WW
BID : J78P9KDB0FOR
Read: GUEST DL1LCA DH0GHU OE7FMI
Subj: congrats physics p.
Path: DB0FHN<DB0FOR
Sent: 061016/1744z @:DB0FOR.#BAY.DEU.EU [Forchheim/JN59MO] DP6.00 $:J78P9KDB0FO
From: DK2ZA @ DB0FOR.#BAY.DEU.EU (Helmut)
To: TECH @ WW
Hello Pete and John,
your solution is absolutely correct.
R1 in series with a parallel circuit consisting of R2 and R3.
Rtot = 22 Ohm, U = 15.55 V, P = 11 W.
Maybe in a few weeks I can present this problem to my 10. class students.
Last week they learned Ohm's Law, so it will take a while...
Thank you for reading my bull and for taking the time to think about it!
By the way ... do you know this very old but somehow rather tricky problem?
---------------------------------------
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A |--------| | |--------| |--------| | B
o---------| 10 Ohm |---------| 10 Ohm |---------| 10 Ohm |---------o
| |--------| |--------| | |--------|
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---------------------------------------
Many people find it difficult to determine the resistance between A and B.
And if you found it out, how do you best explain it?
vy 73 de Helmut, DK2ZA
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