Current Electricity
The process during which charges continuously move from a higher potential to a lower potential becomes a continuous source of
heat energy
light energy
chemical energy
electrical energy
electrical energy
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The value of resistance in insulators isA. small
B. large
C. zero
D. can not be determined
The resistance of a copper wire if it’s length is 1 m and its diameter is 2 mm is
A. 5.4 x 10-3ย ฮฉ
B. 5 ฮฉ
C. 4 ฮฉ
D. 2 ฮฉ
The wire which carries no electricity is called
A. Earth/ground wire
B. livewire
C. neutral wire
D. delta wire
In a circuit 3 resistors 2ฮฉ, 3ฮฉ, 6ฮฉ are connected (in parallel combination) across a battery of 6V, then the total current of the circuit should be
A. 12A
B. 3A
C. 6A
D. 2A
The specific resistance of iron is
A. 5.25 ร 10-8
B. 1.69 ร 10-8
C. 9.8 ร 10-8
D. 2.75 ร 10-8
The current which does not change its direction of flow is called
A. negative current
B. direct current
C. alternative current
D. fixed current
To pass the maximum current in the circuit, an ideal galvanometer should have
A. large resistance
B. very small resistance
C. no resistance
D. none of above
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