Two 16 ohm speakers are connected in parallel to an amplifier that provides a 32 volt output.The voltage across each speaker is __________.
Answer(s): D
The voltage across parallel resistors is the same.
The current in the 4 ohm resistor is __________.
Use Ohm's law V=IR. The total resistance in the circuit is 10 ohms (add the resistance for serial resistors).Therefore, the total current across either of the resistors is I = V/R = 10/10 =1 amp.
What is the reading on the kilowatt-hour meter shown below?
Answer(s): C
The meter has four dials with the numbers 0 to 9. The pointers rotate in different directions. Read the dials from the left, using the number the dial pointer just passed.
The electronic symbol shown below represents a(n) __________.
The symbol is a standard representation of a diode.
What is the voltage across and current through the resistor R when the switch is open?
When the switch is open, there is no voltage or current.
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