Understanding Circuits

Which resistor uses the most voltage?
1. 6Ω
2. 8Ω
3. 10Ω
4. same for all
Which resistor has the greatest current?
1. 6Ω
2. 8Ω
3. 10Ω
4. same for all
If the 10Ω resistor is increased, how will the current in the 8Ω resistor change?
1. Increases
2. Decreases
3. Does not change
If a break is made at B (so that the wires are not even touching), how will the current change in the 6Ω resistor?
1. Increases
2. Decreases
3. Does not change
If the 8Ω resistor is replaced by a wire, how does the current change?
1. Increases
2. Decreases
3. Does not change
If one of the batteries is replace by a wire, how does the current in the 8Ω resistor change?
1. Increases
2. Decreases
3. Does not change
What is the total resistance of the circuit?
Give your answer without units.
1. 4
2. 6
3. 8
4. 12
5. 18
6. 24
7. 86
What is the voltage from D to E?
1. 0V
2. 3V
3. 4.5V
4. 9V
5. 12V
What is the voltage from C to F?
1. 0V
2. 3V
3. 4.5V
4. 9V
5. 12V
Which resistor has the most voltage across it?
1. 2Ω
2. 3Ω
3. 6Ω
4. Same for all
Which resistor has the most current thru it?
1. 2Ω
2. 3Ω
3. 6Ω
4. Same for all
If the 6Ω resistor is removed so that there is a break between F and G, how will I_total change?
1. Increases
2. Decreases
3. No Change
If the 6Ω resistor is removed so that there is a break between F and G, how will R_total change?
1. Increases
2. Decreases
3. No Change
If one of the batteries is replaced by a wire, how does I_total change?
1. Increases
2. Decreases
3. No Change
What is the current flowing thru the 2Ω resistor?
1. 1 A
2. 2 A
3. 3 A
4. 4 A
5. 6 A
What is the voltage between D and F (V_{D to F})?
1. 0V
2. 3V
3. 6V
4. 9V
5. 12V
What is V_{F to J}?
1. 0V
2. 3V
3. 6V
4. 9V
5. 12V
What is V_{B to E}?
1. 0V
2. 3V
3. 6V
4. 9V
5. 12V
What is V_{at F}?
1. 0V
2. 3V
3. 6V
4. 9V
5. 12V
If the circuit is broken at G (if there is an air gap at G), what is the voltage between the open ends of the break?
1. 0V
2. 3V
3. 6V
4. 9V
5. 12V
If the circuit is broken at G (if there is an air gap at G), how will the total current of the circuit change?
1. Increases.
2. Decreases.
3. There is no change.
If the circuit is broken at G (if there is an air gap at G), how will the total resistance of the circuit change?
1. Increases.
2. Decreases.
3. There is no change.
If the 10Ω resistor is replaced by a wire how does R_total for the circuit change?
1. Increases.
2. Decreases.
3. There is no change.
If the 4Ω resistor is replaced by a wire how does I_total change?
1. Increases.
2. Decreases.
3. There is no change.
What is R_total for Branch 1?
1. 2Ω
2. 3Ω
3. 4Ω
4. 6Ω
5. 8Ω
6. 12Ω
What is the current thru the 4Ω resistor?
1. 1 A
2. 2 A
3. 3 A
4. 4 A
5. 8 A
6. 10 A
Which resistor uses the most voltage?
1. 2Ω
2. 3Ω
3. 4Ω
4. 8Ω
5. 10Ω
Which resistor has the most current flowing thru it?
1. 2Ω
2. 3Ω
3. 4Ω
4. 8Ω
5. 10Ω
How much current flows thru the 2Ω resistor?
1. 2 A
2. 3 A
3. 4 A
4. 5 A
5. 6 A
6. 7 A
7. 8 A
How much current flows from J to K?
1. 2 A
2. 3 A
3. 4 A
4. 5 A
5. 6 A
6. 7 A
7. 8 A
What is the total current of the circuit?
1. 2 A
2. 3 A
3. 4 A
4. 5 A
5. 6 A
6. 7 A
7. 8 A
How much voltage does the 2Ω resistor use?
1. 2V
2. 4V
3. 6V
4. 8V
5. 10V
6. 12V
Are the 2Ω the 4Ω resistor in parallel or series?
1. Parallel
2. Series
Which resistor has the most voltage across it: the 2Ω or the 4Ω resistor?
1. 2Ω
2. 4Ω
3. They are the same.
Which resistor has the most current flowing thru it: the 2Ω or the 4Ω resistor?
1. 2Ω
2. 4Ω
3. They are the same.
What is the equivalent resistance of the three resistors shown?
1. 3Ω
2. 4.5Ω
3. 6Ω
4. 9Ω
5. 18Ω
6. 27Ω
What is the equivalent resistance of the three resistors shown?
1. 3Ω
2. 4.5Ω
3. 6Ω
4. 9Ω
5. 18Ω
6. 27Ω
If the resistors represent light bulbs, which one would be the brightest?
1. 2Ω
2. 5Ω
3. 9Ω
If the resistors represent light bulbs, which one would be the brightest?
1. 2Ω
2. 5Ω
3. 9Ω
If light bulb 1 is brighter than light bulb 2, which one has the greater resistance?
1. Light bulb 1
2. Light bulb 2
3. They are the same.
Which light bulb uses more power?
1. Light bulb 1
2. Light bulb 2
3. They are the same.
If light bulb 2 is brighter than light bulb 1, which one has the greater resistance?
1. Light bulb 1
2. Light bulb 2
3. They are the same.
Which light bulb uses more power?
1. Light bulb 1
2. Light bulb 2
3. They are the same.
How much total power is produced by the battery in the parallel circuit above?
1. 2W
2. 4W
3. 8W
4. 10W
5. 12W
6. 28W
What is the total power produced by the batteries in the series circuit above?
1. 2w
2. 4w
3. 6w
4. 12w
5. 18w
6. 24w
7. 144w
What is the equivalent resistance of the two resistors shown?
1. 3Ω
2. 4.5Ω
3. 6Ω
4. 9Ω
5. 18Ω
6. 27Ω
If all three of the resistors are light bulbs, which one would be the brightest?
1. 2Ω
2. 4Ω
3. 6Ω
4. All are the same brightness.