Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 4RQ
If a voltage spike lasts for 1.5 nanoseconds, what is the frequency of the spike?
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Slope of graph = 'V/'f= 1.28/3.25 = 0.394 x 10-14 = h/e
Calculate 'h': (slope) x (e) = (0.394 x 10-14) x (1.6 x 10-19) = 6.30 x
10-34 Percentage error from Planck's constant: ((6.626 - 6.30) /
6.626) x 100 = 4.9%
Depending on the exact performance and efficiency of the Photo Electric
tube, errors ranging from 3% up to 10% or even higher can be expected
in calculating Planck' Constant. Nevertheless, the method and the theory
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Discussion:
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2) Find the experimental value of Planck's constant and the error ratio.
3) Explain how light can behave as both a particle and a wave.
In the circuit shown, the voltage between A and B is UAB=24 V and remains constant. The resistance R3=36 2. To ensure that when the switch S is closed or open, the voltages across C-B are 6 V and 8V, respectively, find the values of R₁ and R2.DO NOT USE AI OR CHATGPT
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Chapter 25 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 25 - Describe the difference between a voltage surge...Ch. 25 - Explain why voltage spikes and surges are...Ch. 25 - If a voltage surge lasts for 20 microseconds, what...Ch. 25 - If a voltage spike lasts for 1.5 nanoseconds, what...Ch. 25 - What two characteristics of capacitors enable them...Ch. 25 - What electrical component is employed in surge and...Ch. 25 - Prob. 7RQCh. 25 - What electrical component is used to protect...Ch. 25 - What unit of measure is used to indicate the...Ch. 25 - In reference to the load, how are capacitors...
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- Find V1 in the circuit below. Do on paperarrow_forwardHW3/ Express the value of H in rectangular components at P(0, 0.2, 0) in the field of: (a) a current filament, 2.5 A in the a₂ direction at x = = 0.1, y = 0.3; (b) a coax, centered on the z axis, with a = 0.3, b = 0.5, c = 0.6, I = 2.5 A in the a₂ direction in the center conductor; (c) three current sheets, 2.7a, A/m at y = 0.1, −1.4ax A/m at y = 0.15, and -1.3a, A/m at y = 0.25.arrow_forwardDO NOT USE CHATGPT Need Pen & Paper solutionarrow_forward
- DO NOT USE CHATGPT Need Pen & Paper solutionarrow_forwardQ4) A 460-V series motor runs at 500 r.p.m. taking a current of 40 A. The total resistance of the armature and field circuits is 0.8 Q. If the load is reduced so that the motor is taking 30 A, and assuming the flux is proportional to the field current, calculate: (a) the speed and (b) percentage change in torque.arrow_forwardQ3) A d.c. motor takes an armature current of 110 A at 480 V. The armature circuit resistance is 0.2 Q. The machine has 6-poles and the armature is lap-connected with 864 conductors. The flux per pole is 0.05 Wb. Calculate: (a) the speed and (b) the torque developed by the armaturearrow_forward
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