Science william

13. If a 6Ω and 12Ω resistor are connected in parallel, what is the equivalent resistance? a) 4Ω b) 6Ω c) 8Ω d) 9Ω

Name the process that causes the loss of water from the surface of the leaf.

10. What is the voltage across each resistor in a parallel circuit with a 9V battery? a) Varies with resistance b) Half of 9V c) Same as battery (9V) d) Zero

6. Which combination will produce a higher total current from a 9V battery? a) Two 3Ω resistors in series b) Two 3Ω resistors in parallel c) One 6Ω resistor d) One 9Ω resistor

15. If 3 identical bulbs are connected in parallel and one burns out, what happens to the brightness of the others? a) They get dimmer b) They get brighter c) They stay the same d) They turn off

Name the tube in the stem that transports water up the flowering plant.

In a parallel circuit, there are two resistors (R₁ = 6Ω, R₂ = 3Ω) connected to a 12V battery. What is the total current drawn from the battery?

8. What is the equivalent resistance of two 4Ω resistors connected in parallel? a) 2Ω b) 4Ω c) 8Ω d) 1Ω

12. What is the main advantage of a parallel circuit over a series circuit in homes? a) Cheaper to install b) Less energy loss c) If one appliance fails, others keep working d) Produces more heat

Which of the following statements is true about current in a series circuit? a) It splits equally across each resistor b) It is zero c) It is the same throughout the circuit d) It increases with each resistor

What happens to the total current in a series circuit when you add more resistors? a) It increases b) It stays the same c) It decreases d) It becomes zero

14. Which circuit type is better for measuring total resistance easily? a) Parallel b) Series c) Combination d) Open circuit

Name the cells in the root that absorb water from the soil. R -------

5. Two resistors (R₁ = 10Ω, R₂ = 10Ω) are connected in parallel to a 10V source. What is the current through each resistor? a) 0.5 A and 0.5 A b) 1 A and 1 A c) 2 A and 2 A d) 5 A and 5 A

11. In a series circuit, if one resistor is removed or fails open, what happens to the current? a) It increases b) It stays the same c) It becomes zero d) It is halved

7. In a series circuit with three resistors (2Ω, 3Ω, and 5Ω) and a 10V battery, what is the total current? a) 0.5 A b) 1 A c) 2 A d) 10 A

In a series circuit with a 12V battery and two resistors (R₁ = 2Ω, R₂ = 4Ω), what is the total current flowing in the circuit?

9. In a parallel circuit, what happens to the total current if more branches are added? a) It decreases b) It stays the same c) It increases d) It becomes zero