Question 1
The figure shows a spherical object placed in front of a point source of light
(i) Point source.
Sketch and name the shadow formed on the screen provided at the right hand side
Answer
Question 2
Three capacitors are 2µF and two 3µF capacitors are connected as shown below
From the figure find the effective capacitance
Answer
Question 3
Three bulbs are connected in series with a battery of dry cells. At first, the bulbs shine brightly but gradually become dimmer. Using the same cells, explain how you would increase the brilliance of the bulbs.
Answer
Question 4
The figure below shows iron and steel rods placed in contact with a map net
State with a reason what is observed when this magnet is removed from the rods.
Answer
Some iron filings will fall off from iron while the steel rod will retain most of the fillings. Steel rod retain magnetism for long while iron loses magnetism very fast
Question 5
(a) Show the direction of the magnetic field in the conductor carrying current shown below
(b) The above conductor was placed in a magnetic field. Show the direction of the force on the conductor.
Answer
(a)
(b)
(b)