Which circuit shown will produce light when the switch is close?
B
15
A group of students is building the circuit represented in the diagram. What object can be used at position x for the buzzer to sound when Switch K is closed?
F
15
Which diagram shows how the student should change the circuit?
J
15
With the switches in these positions, which lights are on?
F
15
Which two switches can be open and still allow all of the parts to work?
F
15
Which of these circuits should the student build?
A
15
Which LEDs produce light when the switch is in the position shown?
A
15
Which procedure would most likely allow the bulbs to light?
D
15
When the student connects the wires as shown, which of the bells will ring?
G
15
In which of these circuits will the other lightbulbs still light even if one bulb is burned out?
C
15
Which change would cause all the bulbs to go out?
A
15
What will happen is Switch 3 is closed and the other switches are left open?
C
15
Which procedure will result in only the blue lightbulbs operating?
C
15
The lightbulb does not glow. Which statement explains this observation?
G
15
In addition to mechanical energy, which of these is produced as electric current passes through the circuit of this fan?