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Show that average value of Poynting vector for a plane e-m wave is 1/2 √μ/e XH2.
A sinusoidal voltage trace displayed by an oscilloscope is shown in Figure. If the 'time/cm' switch is on 500µs/cm and the 'volts/cm' switch is on 5V/cm, find, for the waveform,
why horse shoe magnet is use in galvanometer
Q. Give the drawbacks of Sommerfeld’s atom model? Drawbacks of Sommerfeld's atom model: (i) It couldn't explain the distribution and arrangement of electrons in atoms.
Due to drift velocity of electrons and due to collision of electrons
Q. Transformation of kinetic energy to potential energy? A tiny ball at the end of string is swung in a circular vertical loop. The speed of rotation is reducing to the point t
Draw a circuit diagram of a common emitter amplifier by using n-p-n transistor. Show input and output voltages graphically. The current gain for common emitter amplifier is 59.
Q. What is cut-off or stopping potential? The minimum negative (retarding) potential specified to the anode for which the photo electric current becomes zero is called the cut
FACTORS AFFECTING INDUCED EMF By experiment, the following factors may be noted: • The faster the magnet (or coil) is moved, the greater is the deflection obtained on the meter
A large sculpture is lowered into place by a crane. The sculpture has a mass of 2225 kg. When the sculpture makes contact with the ground, the crane slowly releases the tension in
How to calculate change in entropy.
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