1. It is preferable to connect bulbs in series or in parallel? A. Series B. Parallel C. both D. neither 2. Batteries are generally connected in A. series B. parallel C. both D. neither 3. In a wecircuit, the total resistance is greater than the largest resistance in the circuit. A. series B. parallel C. both D. neither 4. Ina circuit, the total resistance is smaller than the smallest resistance in the circuit. A. senes B. parallel C. both D. neither 5. Which is the costly efficient connection? A. series B. parallel C. both D. neither6. The electrical appliances in a house are connected in A. series B. parallel C. both D. neither 7. From the power rating of any electrical appliances, we can find A. The resistance of the appliances B. The safe limit of current which can flow through the appliances C. Both (A) and (B) D. None of these 8. Resistivity of a wire depends on A. length B. material C. cross section area D. none of the above. 9. When one bulb in a series circuit containing several light bulbs bum out A. the other bulbs turn brighter. B. nothing changes in the rest of the circuit C. none of the other bulbs will light up. 10. Identity the following as characteristics of either a series circuit or a parallel circuit: Consists of units wired in separate branches. A. Series circuit B. Parallel circuit C. none of these 11: Identify the following as characteristics of either a series circuit or a parallel circuit; When one light bulb bums out, the rest stay lit. A. Series circuit B. Parallel circuit C. none of these 12. Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms A. T/2 B. 2 C. 4r D. 1/4 13. Kirchhoff's second law is based on law of conservation of A. mass B. charge C. energy D. momentum 14. Ampere second could be the unit of A. power B. charge C. energy D. conductance 15. Which of the following is NOT the same as watt? A. Joule/sec C. Amperes x volts B. Amperes/volt D. (amperes)2 x ohm 16. An electric current of 5A is same as A. 5J/C B. 5V/C C. 5C/sec D. 5w/sec 17. The statement which correctly represents Ohm's law A. V = IR B. V = R/I C. R = VI D. I = R/V 18. A 10 ohms resistor is powered by a 5 -V battery. The current flowing through the source is A. 2A B. 10 A C. 0.5 A D. 50 A 19. Repeat the above problem for resistor values of 30 ohms each when the source is 60 V. A. 2A B. 4 A C. 0.5 A D. 0.25 A 20. Two parallel resistors both having their values 50 and 60 ohms are connected in parallel. The overall current provided by the 100 V source is A. 1.72 A B. 2.88 A C. 3.66 A D. 4.52 A