1. CKT Practice

3. Annotate the ckts. Which ckt could the table represent?

5. In the figure above is shown a circuit with two resistors in series with a battery.
What will happen to the voltage across R­1 (call this V1) and the voltage across R2 (call this V2) if the resistance R1 increases?
V1 and V2 stay the same.
V1 increases and V2 stays the same
V1 stays the same and V2 decreases
V1 increases and V2 decreases
V1 and V2 decrease
Explain

6. In the figure above is shown a circuit with two resistors in parallel with a battery.
What will happen to the voltage across R­1 (call this V1) and the voltage across R2 (call this V2) if the resistance R1 decreases?
V1 and V2 stay the same.
V1 decreases and V2 stays the same
V1 increases and V2 stays the same
V1 increases and V2 decreases
V1 and V2 decrease
Explain

7. In the figure is a circuit with three identical light bulbs.
What will happen to amount of light coming from B1 and B2 when the switch is closed?
B1 and B2 brightness don’t change.
B1 gets brighter and B2 gets dimmer.
B1 gets brighter and B2 stays the same.
B1 gets dimmer and B2 gets brighter.
B1 and B2 get dimmer
Explain

9. Annotate the ckt and sketch the changes in potential difference vs
Annotate the ckt and sketch the changes in potential difference vs. the relative position loop A-G in the circuit

10. Annotate the ckt and sketch the changes in potential difference vs
Annotate the ckt and sketch the changes in potential difference vs. the relative position for the 2nd complete loop in the circuit

11. Two ckts, each with a high R bulb (L) and a low R bulb (R) are shown.
Which bulb in the top ckt would get energy at a greater rate?
Is this because there is more current or more pressure difference across the bulb?
Which bulb in the btm ckt would get energy at a greater rate?

12. In the figure is a circuit with two bulbs and a resistor.
What will happen in the circuit when the switch is closed? Explain.
How is a “resistor” different from a bulb?