An isotropic radiator has a radiation resistance of 22.5 ohms and loss resistance of 11.25 ohms.  What will be the radiation efficiency? Express in percentage.

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Q: 4. a. For the waveform shown in figure5, determine (i) Peak value (ii) (iii) (iv) the peak-to-peak…

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Q: With V1, voltage peak to peak is 10 volts, R1=200 Ohm, R2=1000 Ohm and C1= 300 nF. Find Vx, voltage…

A: Step 1: Basic of complex numbers used: x+jy=x2+y2​∠tan−1(xy​) j∗j=−1⟹j=−j1​ Relationship between…

Q: 10 nC -5 nC How much work must you do to move an electron from A to B? The rectangle is 16.6 cm high…

A: Work done to move a electron from A point to B point.  Work done W= q∆V ∆V= VA - VB

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Q: How long will it take for a 2.2 µF capacitor to charge when connected in series with a 820 ohm…

A: Given: A series RC circuit has, Capacitance, C = 2.2 μF Resistance, R = 820 ohm

Q: Problem 4 Plot ix versus √x using the 0,7V model for the diodes. ix ¿x Vx (a) √x 1ke D ✓ it 1ksz W…

A: We need to plot graph between voltage and current for given circuits .

Q: Sketch the output waveform of the given circuit, assuming that the voltage of the battery is 1V and…

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Q: For a certain photodiode at a given irradiance, the reverse resistance is 200 k2 and the reverse…

A: Given: Brief description: In photodiode we will use a silicon PN junction diode.   Depending upon…

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Q: The radiation resistance of a circular loop of one turn is 0.01 ohm. The radiation resistance of…

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Q: How long would it take two parallel .01 mF capacitors to charge through a 1M W resistance?

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Q: Cylindrical metallic parabolic trough solar thermal collectors. 1. Does not rotate. 2. It rotates…

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Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).