Describe how varying temperature affects the I-V characteristics of a PV device?
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- Use the data provided to find the slope of the Dy vs Vdy graph. Va is 1000 V.A close analogy exists between the flow of energy by heat because of a temperature difference (see Section 20.7) and the flow of electric charge because of a potential difference. In a metal, energy dQ and electrical charge dq are both transported by free electrons. Consequently, a good electrical conductor is usually a good thermal conductor as well. Consider a thin conducting slab of thickness dx, area A, and electrical conductivity o, with a potential difference dv between opposite faces. (a) Show that the current I = dq/dt is given by the equation on the left: Charge conduction Thermal conduction dq TA dt JdT| kA dt dQ | dx |AP| |dx In the analogous thermal conduction equation on the right (Eq. 20.15), the rate dQ/dt of energy flow by heat (in Sl units of joules per second) is due to a temperature gradient dT/dx in a material of thermal conductivity k. (b) State analogous rules relating the direction of the electric current to the change in potential and relating the direction of…physics Give me a solution 8. How will the value of angular momentum change if the mass and angular velocity is maintained but the radius of the circular path is reduced to half the original? A. Angular momentum will decrease by a factor of four. B. Angular momentum will be doubled. C. Angular momentum will be halved. D. Angular momentum will increase by a factor of four.
- When initially at 20°C, the power being supplied to a 553 Ohm resistor in a circuit is 7.20 W. Over time, the temperature of the resistor increase to 166°C. If the temperature coefficient of resistivity of the material composing the resistor is 3.23 x 10-3 °C-1, what power is supplied to the resistor at its operating temperature?Which of the following quantities do not have direct-proportional relationship with the heat current by conduction? length of the conductor O none of the above cross-sectional area of the conductor O temperature difference between hot and cold regionSix resistors, all having the same temperatures and compositions, are each attached to a battery with voltage V to form a simple circuit. The resistors have different lengths, l, but the same diameters. Rank the circuits according to the current that flows through the resistor from greatest to smallest. If two (or more) circuits have the same current flowing, give them the same ranking. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.) Circuit: l = 2 cm; V = 1 V Circuit: l = 2 cm; V = 2 V Circuit: l = 1 cm; V = 1 V Circuit: l = 1 cm; V = 2 V Circuit: l = 3 cm; V = 1 V Circuit: l = 3 cm; V = 2 V Explain the rationale you used to establish your rankings. (Select all that apply.) The greater the voltage across a resistor, the greater the current through it.The greater the voltage across a resistor, the less the current through it.The longer the resistor is, the less its resistance, and the current through it will be…
- preferably no chatgpt answers thank youPlease state if each question is True or False; if False, please explain whyGiven the tolerance on β for the thermistor, what is the absolute value of the accuracy of the reading in °C that you will get on the thermistor at 30°C? (Type in a three-decimal number) Given the tolerance on β = 3977 (+ or - 0.75% at 25°C for a 5000 ohm resister )