revision electricity
Two bulbs are connected in a series circuit. One bulb is unscrewed. What happens to the other bulb?
A
It gets dimmer
B
It does not light
C
It gets brighter
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Lesson duration is: 15 minItems in this lesson
Two bulbs are connected in a series circuit. One bulb is unscrewed. What happens to the other bulb?
A
It gets dimmer
B
It does not light
C
It gets brighter
Slide 1 - Quiz
Two resistors are connected in series to a 12V power supply. The voltage across one of the resistors is 10V. What is the voltage across the second resistor?
A
2V
B
10V
C
12V
Slide 2 - Quiz
What is the combined resistance of a 2 Ohm and 3 Ohm resistor connected in series?
A
6Ω
B
5Ω
C
1Ω
Slide 3 - Quiz
The combined resistance of two resistors connected in series is 55 Ohm. One of the series resistors is 30 Ohm. What is the size of the second resistor?
A
15Ω
B
25Ω
C
85Ω
Slide 4 - Quiz
Two bulbs are connected in a parallel circuit. One bulb is unscrewed, what happens to the other bulb?
A
Its brightness does not change
B
It get dimmer
C
It gets brighter
Slide 5 - Quiz
A parallel circuit has two identical resistors. A current of 4A flows from the battery. What is the value of the current through each resistor?
A
1A
B
2A
C
4A
Slide 6 - Quiz
A series circuit has two identical resistors. A current of 4A flows from the battery. What is the value of the current through each of the resistors.
A
1 A
B
2A
C
4A
Slide 7 - Quiz
Two 15 Ohm resistors are connected parallel. What is the total resistance?
A
7.5Ω
B
15Ω
C
30Ω
Slide 8 - Quiz
Two resistors are connected in parallel. The voltage across one of the resistors is 12V. What is the voltage across the second resistor?
A
2V
B
10V
C
12V
Slide 9 - Quiz
Two 8 Ohm resistors are connected in parallel. The parallel combination is then connected in series with a 10 Ohm resistor. What is the total resistance?
A
12Ω
B
14Ω
C
26Ω
