PH 122 Lecture Notes - Electric Blanket, Electric Field, Chemical Energy

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28 Feb 2014
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Such a flow is produced by a potential difference. The current depends on the potential difference and the resistance. The resistance is a property of the material and the dimensions. This is the basis of many common devices. The electric eel and the torpedo ray both use bioelectricity to stun and capture prey. The eel can produce a larger voltage, but the ray produces a larger current. Black electrode at higher potential negative reading. Red electrode at higher potential positive reading. Work is done to raise charges in a battery to a higher potential. In the cell (another source of potential) this work is done by ion pumps. 1 c/s = 1 amp = 1 a. The discharge of an electric eel can transfer a charge of 2. 0 mc in a time of 2. 0 ms. Changing wire dimensions short thick wire large current; long, thin wire small current.

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