Physics(SS 1) 3rd term Examination

Welcome to your Physics(SS 1) 3rd term Examination

1. One of these is NOT among the seven (7) crystal system

2. Stiffness of a spring is also known as

3. A spring at rest or static has an initial force of

4. On a graph the energy stored in a elastic material is is equal to the __________

5. 1 ampere =

6. The instrument used in measuring current is

7. Potential difference is also known as

8. Power can also be defined as

9. Since the unit of electromotive force is in volts that means it can be used interchangeably with __________.

10. The extent a material can go resist electricity is termed as

11. If the mass of a body is xkg, then the force possessed by this body will be

12. One of these is NOT a safety device

13. The axial relationship of rhombohedral crystal system is given as:

14. Mathematical expression of a phenomenon in physics is same as saying the ____________ of the phenomenon.

15. One of these is NOT among the other names of capillary action

16. Which of the following has a convex meniscus

17. Force and weight are measured in

18. Manual method of measuring viscosity are as follows, EXCEPT

19. Examples of amorphous substances are as follows, EXCEPT

20. The force that acts on a fluid making it behave as a stretched elastic skin is called

Subjective (Answer All)

1. Make "r" the subject of the formula in πr²ρhg = 2πrγ [(show working) 4mks]

2. "r" in the equation above is termed/called ____________

3. The formula of workdone in an elastic material is ______________

4. If resistivity is 0.3Ωm, then conductivity is ____________. (show working and leave your answer in decimal)

5. ______________represents a material ability to conduct electric current.

6. Since mgh=½Fe, given height (h) as 6.2m and Force (F) as 88.2N, find extension (e) [show working] 4mks

7. Relationship between power(P) , resistance (R) and current (I) is that P= ________

8. A complete unbroken path for current to flow from the power source to the load and back is called _________ circuit.

Theory (No 1 is compulsory, then choose any TWO from Nos. 2,3 & 4 making it 3 questions)

1. From the figure given to you on a sheet of paper 📜, Find the following: (12marks)

a. The voltage flowing in the circuit.

b. The current that flows through each resistor

c. The amount of current flowing from the battery

d. Total resistance

e. Power delivered by the battery

f. Power absorbed by each resistor

2a. A current of 3.8A flows in a wire for 14minutes. How much charge passes through this circuit during this time ?

2b. Find the surface tension given mass as 0.2kg and radius as 14m. (4mks)

3a. Define the following: (i) Efflorescence, (ii) Haphazard

3b. List and draw any 3 crystal system you know.

4a. An electric appliance takes 75A when operated on a 1220V supply. Find the cost of operating the appliance for 30days at 98kobo per KWh.

4b. What is the wok of fuse ? (4mks)

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