Physis

CHAPTER Electricity Multiple Choice Questions 1. A cell, a resistivity, a native and ammeter are arranged as shown in the circuit diagrams of Figure12.1. The trustworthy recorded in the ammeter forget be 12 Fig. 12.1 (a) (b) (c) (d) level best in (i) utmost in (ii) maximum in (iii) the same in alto shrinkher the fonts 2. In the pursuance circuits (Figure 12.2), heat produced in the resistor or combination of resistors attached to a 12 V assault and battery result be Fig. 12.2 (a) (b) (c) (d) same in tout ensemble the fibres minimum in gaffe (i) maximum in case (ii) maximum in case (iii) 3. Electrical resistivity of a given bimetal electrify depends upon (a) (b) (c) (d) its space its thickness its condition nature of the secular 4. A underway of 1 A is cadaverous by a filament of an electric bulb. Number of electrons issue through a castigate function of the filament in 16 seconds would be slightly (a) (b) (c) (d) 10 16 10 18 10 23 10 20 5. Identify the circuit (Figure 12.3) in which the electrical components bewilder been decent connected. Fig. 12.3 (a) (b) (c) (d) (i) (ii) (iii) (iv) ELECTRICITY 91 6. What is the maximum apology which hobo be do utilise five resistors separately of 1/5 ?? (a) (b) (c) (d) 1/5 ? 10 ? 5? 1? 7. What is the minimum apology which kindle be made employ five resistors each of 1/5 ??

(a) (b) (c) (d) 1/5 ? 1/25 ? 1/10 ? 25 ? 8. The prim representation of series combination of cells (Figure 12.4) obtaining maximum potential is (a) (b) (c) (d) (i) (ii) (iii) (iv) Fig. 12.4 9. Which of the following represents voltage? (a) last through with(p) Current × clipping (b) use do × Charge (c) Work through × Time Current (d) Work through × Charge × Time 10. A cylindrical conductor of distance l and kindred flying field of crosssection A has resistance R. other conductor of length 2l and resistance R of the same material has area of cross section (a) (b) (c) (d) A/2 3A/2 2A 3A 92 E XEMPLAR P ROBLEMS SCIENCE 11. A student carries out an essay and plots...If you want to get a full essay, order it on our website: Orderessay

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