Ohm’s law describes the relationship between voltage, resistance, and current. Which of these is Ohm’s law?
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A solution of _____ can be used to remove efflorescence that cannot be removed by washing the wall with water.
A. three parts vinegar to one part water B. two parts glycolic acid to one part water C. one part hydrochoric acid to five parts water D. one part muriatic acid to nine parts water
One of the most used symbols in control schematics is the ____.
a. switch b. transformer c. push button d. capacitor
The strength of an RF signal is determined by the wattage of the transmitter.
Answer the following statement true (T) or false (F)
The subsequent problems deal with the figure below. Assume all outputs are low to begin with unless indicated otherwise.
What does the following PicBasic code do?Low PORTB.2myloop:If (PORTA.1 == 1) ThenHigh PORTB.2ElseLow PORTB.2EndIfGoto myloopHigh PORTB.2
A. keeps LED L1 on only while button B3 is up (i.e., not held down) B. keeps LED L1 on while button B3 is held down, and keeps it on after the button is released C. blinks LED L1 while button B3 is up (not held down), turns on the LED when the button is pressed, and turns it off when the button is released. D. keeps LED L1 on only while button B3 is held down E. turns LED L1 off when button B3 is pressed down, and keeps it off after button B3 is released