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I need help on problem 3 3)Consider the resistor described in problem 1 carrying a current of 1 mA. If the voltage drop across the resistor is 25:0 Volts, what is the resistance (in k )? (b) Electrical currents crossing the human body in excess of 0.3A are typically deadly. If electrical current has a direct pathway to the heart, it can interfere with your heart beat. In such a case, it only takes about 1 mA to be deadly. Fortunately, under dry conditions, the hand-to-hand resistance of the human body can be as large as 100,000 : This is primarily due to the resistance of your skin. Unfortunately, if your skin is wet or chapped, your resistance can be as low as 1000 . If you touch a 9 Volt transistor radio battery, placing one hand on the positive electrode, and the other hand on the negative electrode, what will be the current passing through your body with dry skin? With wet skin?

I need help on problem 3 3)Consider the resistor described in problem 1 carrying a current of 1 mA. If the voltage drop across the resistor is 25:0 Volts, what is the resistance (in k )? (b) Electrical currents crossing the human body in excess of 0.3A are typically deadly. If electrical current has a direct pathway to the heart, it can interfere with your heart beat. In such a case, it only takes about 1 mA to be deadly. Fortunately, under dry conditions, the hand-to-hand resistance of the human body can be as large as 100,000 : This is primarily due to the resistance of your skin. Unfortunately, if your skin is wet or chapped, your resistance can be as low as 1000 . If you touch a 9 Volt transistor radio battery, placing one hand on the positive electrode, and the other hand on the negative electrode, what will be the current passing through your body with dry skin? With wet skin?

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I need help on problem 3
3)Consider the resistor described in problem 1 carrying a current of 1 mA. If the voltage drop across the resistor is 25:0 Volts, what is the resistance (in k )? (b) Electrical currents crossing the human body in excess of 0.3A are typically deadly. If electrical current has a direct pathway to the heart, it can interfere with your heart beat. In such a case, it only takes about 1 mA to be deadly. Fortunately, under dry conditions, the hand-to-hand resistance of the human body can be as large as 100,000 : This is primarily due to the resistance of your skin. Unfortunately, if your skin is wet or chapped, your resistance can be as low as 1000 . If you touch a 9 Volt transistor radio battery, placing one hand on the positive electrode, and the other hand on the negative electrode, what will be the current passing through your body with dry skin? With wet skin?

top plale 8ఉve» గరా mdicate the direchron flow They aln mdreak the Tecki nupar tharge fer a leaky
Transcribed Image Text:top plale 8ఉve» గరా mdicate the direchron flow They aln mdreak the Tecki nupar tharge fer a leaky
Problem 1 Consider the leaky capacitor shown in the figure above. Speci- fications are as follows: The plate area is A=1.0 cm², and the gap distace is L=40 pm. The density of free electrons is n. density of free holes n, =1x 10" particles/m* is the same. Suppose that the holes are immobile, (a) For a current I 1 mA, what is the rate (in particles per second) at which electrons pass by the imaginary boundary? (b) What drift velocity (in meters/see) would give rise to this current? (c) Drift velocities in conductors tend to be small, but small as compared to what? How many orders of magnitude smaller is the average drift velocity in this device than the RMS thermal velocity of an electron moving in free space at room temperature? (Use the law of equipartition to find the RMIS thermal velocity of a free electron.) CIL = 1 x 1026 particles/m², and the 780 I.
Transcribed Image Text:Problem 1 Consider the leaky capacitor shown in the figure above. Speci- fications are as follows: The plate area is A=1.0 cm², and the gap distace is L=40 pm. The density of free electrons is n. density of free holes n, =1x 10" particles/m* is the same. Suppose that the holes are immobile, (a) For a current I 1 mA, what is the rate (in particles per second) at which electrons pass by the imaginary boundary? (b) What drift velocity (in meters/see) would give rise to this current? (c) Drift velocities in conductors tend to be small, but small as compared to what? How many orders of magnitude smaller is the average drift velocity in this device than the RMS thermal velocity of an electron moving in free space at room temperature? (Use the law of equipartition to find the RMIS thermal velocity of a free electron.) CIL = 1 x 1026 particles/m², and the 780 I.
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