Unit 4 Exam Review Questions

• A1 = A2

• A1 > A2

• A1 < A2

• A1 = 0

The five resistors shown below have the lengths and cross-sectional areas indicated and are made of material with the same resistivity. Which has the least resistance?

• 
• 
• 
• 

• 3 Ohms

• 4 Ohms

• 5 Ohms

• 6 Ohms

• Potential difference between the two ends

• Electric field strength within the resistor

• Resistance

• Current

• A

• B

• C

• D

If three resistors with unequal resistance are connected in parallel in a circuit, which of the following is true of the total resistance?

• It is higher than the value of the highest resistance.

• It is equal to the middle resistance.

• It is equal to the average of the three resistances.

• It is lower than the value of the lowest resistance.

• 1/4 R

• 1/2 R

• R

• 2R

• 1 A

• 0 A

• 3.5 A

• 7 A

• All the bulbs will go out.

• The light intensity of the other two bulbs will decrease, but they will not go out.

• The light intensity of the other two bulbs will increase.

• The light intensity of the other two bulbs will remain the same.

• A

• B

• C

• D

• E