MCQ on Current Electricity - Set 03 - ObjectiveBooks
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# Practice Test: Question Set - 03

1. A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is
(A) 400 Q
(B) 600 Q
(C) 800 Q
(D) 1000 Q

2. For which of the following 'ampere second' could be the unit?
(A) Reluctance
(B) Charge
(C) Power
(D) Energy

3. In a series circuit with unequal resistances
(A) The highest resistance has the most of the current through it
(B) The lowest resistance has the highest voltage drop
(C) The lowest resistance has the highest current
(D) The highest resistance has the highest voltage drop

4. Two resistances Rl and Ri are connected in series across the voltage source where Rl > Ri. The largest drop will be across
(A) Rl
(B) Ri
(C) Either Rl or Ri
(D) None of them

5. Electric current passing through the circuit produces
(A) Magnetic effect
(B) Luminous effect
(C) Thermal effect
(D) Chemical effect

6. When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is
(A) A.C.
(B) D.C.
(C) Any of above two
(D) None of the above

7. A substance whose molecules consist of dissimilar atoms is called
(A) Semiconductor
(B) Super-conductor
(C) Compound
(D) Insulator

8. A rheostat differs from potentiometer in the respect that it
(A) Has lower wattage rating
(B) Has higher wattage rating
(C) Has large number of turns
(D) Offers large number of tapping

9. The ratio of mass of proton to that of electron is nearly
(A) 1840
(B) 1480
(C) 30
(D) 4

10. Which of the following quantities remain the same in all parts of a series circuit?
(A) Voltage
(B) Current
(C) Power
(D) Resistance

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