State Kirchhoff's loop rule
What will be an ideal response?
The sum of the changes in potential around any closed path of a circuit must be zero.
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In a circuit, three pieces of wire labeled A, B and C are joined at a common point, D. If wire B carries 1.5 mA in a direction away from D and C carries current 1.3 mA toward D, what does wire A carry?
A. 0.2 mA toward D B. 0.2 mA away from D C. 2.8 mA toward D D. unable to determine E. 2.8 mA away from D
A transverse periodic wave is represented by the equation y(z, t) = -2.0 cm sin(1,200 rad/s t - 20.0
x). Another transverse wave is represented by the equation y(z, t) = +2.0 cm sin(1,200 rad/s t + 20.0
z). What is the equation that represents the superposition of the two waves?
A. y(z, t) = 4.0 cm sin(1,200 rad/s t - 20.0
z)
B. y(x, t) = 4.0 cm sin(1,200 rad/s t)cos (20.0x)
C. y(x, t) = +4.0 cm cos(1,200 rad/s)sin (20.0x)
D. y(x, t) = +4.0 cm cos(1,200 rad/s) + (20.0x)
"Absolute Zero" is what temperature on the Celsius and Fahrenheit scales respectively?
A) -459°C, -273°F B) -273°C, -212°F C) -212°C, -273°F D) -273°C, -459°F E) 0°C, 459°F
How do colors differ when viewed under incandescent light and fluorescent light?