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