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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