If many bulbs are connected in parallel combination in a circuit and one bulb fuses, what will be happens with the other bulbs?
A. All other bulbs stop glowing
B. Some bulbs glow and some do not glows
C. Some bulbs burst
D. All other bulbs glowing
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Farad is the unit of
A. resistance
B. conductance
C. capacitance
D. inductance
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Vacuum is considered as-
A. Non-magnetic material
B. Diamagnetic material
C. paramagnetic material
D. Rebalanced magnetic material
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If a capacitor stores 1 coulomb at 10 volts, its capacitance will be (F = Farad):
A. 1 F
B. 10 F
C. 0.1 F
D. 0.01 F
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An electric current of 0.5 A flows in the filament of an electric bulb for 5 min. What will be the electric charge flowing through that wire?
A. 400 C
B. 200 C
C. 240 C
D. 150 C
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What is the unit of measures of a magnetic field?
A. Cobalt
B. Ohm
C. Tesla
D. Ampere
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The metal whose electrical conductivity is more is
A. copper
B. aluminium
C. silver
D. lead
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Small drops of the same size are charged to V volts each. If n such drops coalesce to form a single large drop, its potential will be
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An object moves in a straight line when the machine provides continuous power. The distance travelled by the object in time 't' will be proportional to . . . . . . . .
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. . . . . . . . is not an example of an insulator.
A. Rubber
B. Diamond
C. Human body
D. Glass
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The given symbol stands for a/an . . . . . . . . in an electric circuit.
A. plug key
B. electric bulb
C. battery
D. resistor
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Which of the following forces is not electromagnetic in nature?
A. Weight of body
B. Tension in rope
C. Frictional force
D. Electric force in spring
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When two conductors carrying current in the same direction-
A. The conductor will attract each other
B. Conductors will resonate each other
C. Conductors will repel each other
D. Voltage will increase across conductor
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The energy consumption of a typical household in a month is 9 × 108 J. What will be its energy in units?
A. 2500 units
B. 250 units
C. 25 units
D. 0.25 units
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When the current drawn from the main wire is greater than 20A, due to overheating can cause of fire. What is this called?
A. Electric shock
B. Electricity loading
C. Over loading
D. Over heating
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A device which converts electrical energy into mechanical energy is
A. Dynamo
B. Transformer
C. Electric motor
D. Inductor
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Consider the following statements.
1. Magnetic lines of force are closed curves while electric lines are not.
2. Electric lines of force are closed curves while magnetic lines are not.
3. Both electric and magnetic lines of force are closed curves.
Which of statement(s) given above is/are correct?
A. Only 2
B. Both 1 and 2
C. Only 1
D. 1, 2 and 3
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A choke coil has
A. low inductance and high resistance
B. low inductance and low resistance
C. high inductance and low resistance
D. high inductance and high resistance
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While moving from one end to another end inside a solenoid, its magnetic field . . . . . . . .
A. increases
B. decreases
C. remains same
D. first increases then decreases
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If the resistance of the conductor is doubled then the electric current is halved. What causes this:
A. I = V - R
B. I = R V
C. I = V R n
D. I = VR
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