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Worksheetsbasic electrical introduction
Total questions: 20
Worksheet time: 10mins
one coulomb of charge is equal to the charge on
625×1016 electrons
6.25×1016 electrons
62.5×1016 electrons
0.625×1016 electrons
The specific resistance of a wire depends upon
its length
its cross-sectional area
its dimensions
its material
Which one of the following is the best conductor of electricity ?
silver
gold
copper
zinc
A length of wire has a resistance of 6 ohms. The resistance of a wire of the same material three times as long and twice the cross-sectional area will be
36 ohms
9 ohms
1 ohm
12 ohms
The unit of resistivity is
Ω.
Ω - metre.
Ω / metre.
Ω / m².
Which of the followings is/are active element?
Voltage source
Current source
Both
None of these.
Which of the following are the passive elements?
Resistor
Bulb
Both
None of these.
Which quantity consists of a unit 1KWh ?
Energy
Time
Power
charge
KCL works on the principle of which of the following
law of conservation of charge.
law of conservation of energy.
both.
None of the above.
KVL works on the principle of
law of conservation of charge.
law of conservation of energy.
both.
None of the above.
Rms value is defined based on which of the following?
Heating effect
Charge transfer
Current
Voltage
Which of the following defined the average value ?
Voltage
Heating effect
Current
Charge transfer
Electrical appliances are not connected in
series because
series circuit is complicated
power loss is more
appliances have different current ratings
none of the above
Electrical appliances are connected in
parallel because it
is a simple circuit
draws less current
results in reduced power loss
makes the operation of appliances
independent of each other
Voltage drop across 14.5 Ω resistor in figure
29 V
30.5 V
14 V
18 V
Referring to the figure ,the total circuit resistance will be
1000Ω
400Ω
1400Ω
135Ω
In figure
the lamp A will be brighter than lamp B.
the lamp B will be brighter than lamp A.
the two lamps will be equally bright
none of the above
when batteries are arranged in parallel
the current capacity increases
the current capacity decreases
the EMF increases
the EMF decreases
The voltage across the parallel circuit shown in figure is
15 V
10 V
30 V
12.5 V
The current in 10Ω resistor in figure is
3 A
2.5 A
1.5 A
3.5 A
