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Electrical safety. This procedure is not recommended! You'll see why after you work the problem. You are on an aluminum ladder that is standing on the ground, trying to fix an electrical connection with a metal screwdriver having a metal handle. Your body is wet because you are sweating from the exertion; therefore, it has a resistance of 1.0 $\mathrm{k} \Omega$ . (a) If you accidentally touch the "hot" wire connected to the 120 $\mathrm{V}$ line, how much current will pass through your body? Is this amount enough to be dangerous? (The maximum safe current is about 5 $\mathrm{mA}$. (b) How much electrical power is delivered to your body?

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$$\begin{array}{l}{\text { Electrical power delivered to the body is }} \\ {P=V I} \\ {=(120 \mathrm{V})(0.12 \mathrm{A})} \\ {=[14.4 \mathrm{W}]}\end{array}$$

Physics 102 Electricity and Magnetism

Chapter 19

Current, Resistance, and Direct-Current Circuit

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Capacitance and Dielectrics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Cornell University

Simon Fraser University

Hope College

Lectures

10:31

A capacitor is a passive two-terminal electrical component that stores electrical energy in an electric field. The effect of a capacitor is known as capacitance. The electrical charge stored in a capacitor is proportional to the potential difference between its terminals. A capacitor is defined as an electrical component that can store an electric charge. The effect of a capacitor is known as capacitance. The charge on a capacitor is directly proportional to the potential difference across its terminals. The unit of capacitance in the International System of Units (SI) is the farad (F), defined as one coulomb per volt. In electrical engineering, a common symbol for capacitance is the lowercase Greek letter "rho" (?). The capacitance of a capacitor is also expressed in farads.

18:38

In physics, electric flux is a measure of the quantity of electric charge passing through a surface. It is used in the study of electromagnetic radiation. The SI unit of electric flux is the weber (symbol: Wb). The electric flux through a surface is calculated by dividing the electric charge passing through the surface by the area of the surface, and multiplying by the permittivity of free space (the permittivity of vacuum is used in the case of a vacuum). The electric flux through a closed surface is zero, by Gauss's law.

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we know that our weight body has a resistance off one killer home. Andi were given that the voltage is one toward the world now the amount of current that would pass through us is simply we buy our using Onslow, which is 1 21 divided by and cube Holmes ofthe resistance which is 100 0.1 toe ampere which is 120 1,000,000. You know that any current more than 10 millions would be dangerous for human body and this would simply be devastating. Now for part B, we want to find out the power, you know, The power is simply we square by our We're doing this because we already know we are. We could have used the I or we I square are all this formless will give you the same answer. We square by art is simply 120 square by then. Cubed, which is 14.4 What? This is the amount ofthe power generator

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