Entry Test MCQ :: Current Electricity
11.
An immersion heater of 400 watts kept on for 5 hours will consume electrical power of
Answer: Option A
Explanation:
12.
Resistance of a super conductor is
A.
finite
B.
infinite
C.
zero
D.
changes with every conductor
Answer: Option C
Explanation:
13.
Resistance of an ideal insulator is
A.
infinite
B.
zero
C.
finite
D.
depends upon nature
Answer: Option A
Explanation:
14.
Which one is the best material for making connecting wires?
Answer: Option D
Explanation:
15.
Reciprocal of resistivity is called
A.
resistance
B.
inductance
C.
conductivity
D.
flexibility
Answer: Option C
Explanation:
16.
When 2? 4? and 6? resistor are connected in parallel their resultant equivalent resistance will be
A.
12?
B.
11/12?
C.
12/11?
D.
data is insufficient
Answer: Option C
Explanation:
17.
Circuit which gives continuously varying potential is called
A.
complex network
B.
wheat stone bridge
C.
potential divider
D.
all of above
Answer: Option C
Explanation:
18.
Internal resistance is the resistance offered by
A.
source of e m f
B.
conductor
C.
resistor
D.
capacitor
Answer: Option A
Explanation:
19.
There are three bulbs of 60W 100W and 200W which bulb has thickest filament.
Answer: Option B
Explanation:
20.
Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains?
A.
40 W bulb
B.
60 W blub
C.
100 W blub
D.
all will burn equally brightly
Answer: Option A
Explanation:
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