FORM THREE SERIES 01 EXAM 2026 ISESE WITH MARKING SCHEMES
Download for free Form Three ISESE Series 01 Examination 2026 with marking schemes, the papers are available on education websites that collect Tanzanian secondary school examination
SECTION C (30Marks)
Answer ONLY TWO questions from this section
- (a) The figure below shows a flex to the 13A – 3 pin plug which has been incorrectly fitted.
List the mistakes and suggest the corresponding remedies (6 marks)
(b) What would happen if the plug was connected to the mains sockets? (4 marks)
(c) A cell supplies a current of 0.6A through a 2 Ohms resistor and current of 0.2A through a 7 Ohms resistor. Calculate the e.m.f and the internal resistance of the cell.(5 marks)
- (a)The velocity of a car A relative to a car B is 5m/s when the two cars are moving in the
same direction and 15m/s when the two cars are moving in the opposite directions. Determines the velocity of each car (10 marks)
(b) A projection lautern is used to project a slide measuring 3cm × 3cm onto a screen 12cm from
the projection lens. If the size of the screen is 1.5m × 1.5 m, how far from the lens must the slide be for the image to fill the entire screen? (5 marks)
- (a) Why electrical cables are left sagging during installation on the hot day and taut during cold?(4 marks)
(b) A brass plate has a hole whose radius is too small for an iron rivet can fit in. Explain way that the rivet can be made to fit in the hole. (5 marks)
(c) A fixed mass of gas occupies a volume of 1.0 x m3 at a pressure of 76cmHg. What’s volume does the occupy at 17°C if it’s pressure is 72cmHg? (6 marks)
