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10.1 The circuit below consists of a 6 Ω and 15 Ω resistor connected in parallel and an unknown resistor R, in series. An ammeter, a high-resistance voltmeter, a closed switch and battery are connected, as shown. The resistance of the battery and wires can be ignored. The total power dissipated in the parallel part … Read more
A survey regarding their favourite magazine(s) was conducted among 84 high school girls. Three magazines, namely Teen Vogue (T), Drum (D) and People’s Magazine (P) were used in the survey. The results are as follows: 41 read Teen Vogue. 34 read People’s Magazine. 40 read Drum. 18 read Teen Vogue and Drum. 8 read all … Read more
O is the centre of the bigger circle. O lies on the circumference of the smaller circle. OWVU are points on the circumference of the smaller circle. TSVU are points on the circumference of the bigger circle. 10.1 Name FOUR other angles each equal to 𝑥 with reasons. (8) 10.2 Determine the size of Ŵ2 … Read more
A, B, C and D are points on the circumference of the circle in the diagram below. ECF is atangent at C, B1 = B2 . 10.1 If B1 = 𝑥, find, with reasons, TWO other angles equal to 𝑥. (4) 10.2 Hence, show that DC bisects AĈF. (2) [6]
A neutral plastic ruler becomes charged when it is rubbed with a woollen cloth. After rubbing, the ruler has a charge of -3,5 x 10-15 C. 10.1 Distinguish between a neutral object and a charged object. (2) 10.2 Does the ruler GAIN or LOSE electrons? (1) 10.3 Calculate the number of electrons transferred during the … Read more