Current Electricity Class 12 Notes
Current Electricity Class 12 Notes Bihar Board PDF Download NEET, JEE PART-04 | current electricity iit jee notes pdf | current electricity jee questions | current electricity questions pdf | Class 12th English Objective Question | current electricity mcq for neet pdf | English Chapter Wise Summary | current electricity physics pdf on Bihariacademy
हमलोग Current Electricity Class 12 Notes Bihar Board PDF Download के बारे स्टडी करेगे | Join Telegram For Fast Update:- Click Hare दिया गये ऑब्जेक्टिव क्वेश्चन आपको 12th, Neet, Jee Main, Engineering or Other Govt. Exam में भी हेल्प होगा | आपलोग इस ऑब्जेक्टिव क्वेश्चन को स्टडी करके आच्छा मार्क्स लाये |
Current Electricity Class 12 Notes Bihar Board PDF
61. Which of the following quantities remain the same in all parts of a series circuit ?
- (A) Voltage
- (B) Current
- (C) Power
- (D) Resistance
Show Answer
(B) Current
62. A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will
- (A) decrease
- (B) increase
- (C) remain Same
- (D) heater will burn out
Show Answer
(B) increase
63. A 500 W, 220 V bulb is supplied with 110 V. Power consumption by the bulb will be
- (A) slightly less than 126 W
- (B) slightly greater than 125 W
- (C) exactly 125 W
- (D) 260 W
Show Answer
(B) slightly greater than 125 W
64. In an electric kettle water boils in 10 minutes. It is required to boil the boiler in 15 minutes, using same supply mains
- (A) length of heating element should be decreased
- (B) length of heating element should be increased
- (C) length of heating element has no effect on heating if water
- (D) none of the above
Show Answer
(A) length of heating element should be decreased
65. An electric filament bulb can be worked from
- (A) D.C. supply only
- (B) A.C. supply only
- (C) Battery supply only
- (D) All above
Show Answer
(D) All above
66. Resistance of a material always decreases if
- (A) temperature of material is de-creased
- (B) temperature of material is in-creased,
- (C) number of free electrons available become more
- (D) none of the above is correct
Show Answer
(C) number of free electrons available become more
67. Resistance of a tungsten lamp ---- as applied voltage increases
- (A) decreases
- (B) increases
- (C) remains same
- (D) none of the above
Show Answer
(B) increases
68. Electric current passing through the circuit produces
- (A) magnetic effect
- (B) luminous effect
- (C) thermal effect, chemical effect
- (D) all above effects
Show Answer
(D) all above effects
69. If the efficiency of a machine is to be high, what should be low ?
- (A) Input power
- (B) Losses
- (C) True component of power
- (D) kWh consumed
Show Answer
(B) Losses
70. When electric current passes through a metallic conductor, its temperature rises This is due to
- (A) collisions between conduction elect-rons and atoms
- (B) the release of conduction electrons from parent atoms
- (C) mutual collisions between metal atoms
- (D) mutual collisions between conduct-ing electrons
Show Answer
(A) collisions between conduction elect-rons and atoms
71. Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as
- (A) 4 : 25
- (B) 25 : 4
- (C) 2 : 5
- (D) 5 : 2
Show Answer
(C) 2 : 5
72. A glass rod when rubbed with silk cloth is charged because
- (A) it takes in proton
- (B) its atoms are removed
- (C) it gives away electrons
- (D) it gives away positive charge
Show Answer
(C) it gives away electrons
73. Whether circuit may be A.C. or D.C. one, following is most effective in reducing the magnitude of the current.
- (A) Reactor
- (B) Capacitor
- (C) Inductor
- (D) Resistor
Show Answer
(D) Resistor
74. It becomes more difficult to remove
- (A) any electron from the orbit
- (B) first electron from the orbit
- (C) second electron from the orbit
- (D) third electron from the orbit
Show Answer
(D) third electron from the orbit
75. When one leg of parallel circuit is opened out the total current will
- (A) reduce
- (B) increase
- (C) decrease
- (D) become zero
Show Answer
(C) decrease
76. In a lamp load when more than one lamp are switched on the total resistance of the load
- (A) increases
- (B) decreases
- (C) remains same
- (D) none of the above
Show Answer
(B) decreases
77. Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct ?
- (A) 100 W lamp will glow brighter
- (B) 40 W lamp will glow brighter
- (C) Both lamps will glow equally bright
- (D) 40 W lamp will fuse
Show Answer
(B) 40 W lamp will glow brighter
78. Resistance of 220 V, 100 W lamp will be
- (A) 4.84Ω
- (B) 48.4Ω
- (C) 484Ω
- (D) 4840Ω
Show Answer
(C) 484Ω
79. In the case of direct current
- (A) magnitude and direction of current remains constant
- (B) magnitude and direction of current changes with time
- (C) magnitude of current changes with time
- (D) magnitude of current remains constant
Show Answer
(A) magnitude and direction of current remains constant
80. When electric current passes through a bucket full of water, lot of bubblilig 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
Show Answer
(B) D.C
आशा करते है की पोस्ट दी गयी जानकारी अच्छा लगा होगा और कुछ मदद मिला होगा | यदि किसी प्रकार की शिकायत या गलत आंसर या क्वेश्चन है तो हमें कमेंट करे बताये हम अगले पोस्ट में उस कमी को Solve करने की कोशिश करेगे | स्टडी से Releated की प्रकार के क्वेश्चन के लिए गूगल पर Search करे bihariacademy.com
Bihariacademy Also Read | इसे भी पढ़े ---
current electricity iit jee notes pdf | current electricity jee questions
Tag:- Current Electricity MCQ for NEET | current electricity neet questions and answers | questions on current electricity class 12 | current electricity class 12 important questions pdf | current electricity class 12 question bank | current electricity class 12 ncert solutions | numericals on current electricity class 12 pdf
