The property of a conductor due to which it passes current is called___________?
The property of a conductor due to which it passes current is called___________?
A. resistance
B. reluctance
C. conductance
D. inductance
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If the efficiency of a machine is to be high, what should be low __________?
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
E. Ratio of output to inputVoltage dependent resistors are usually made from________________?
Voltage dependent resistors are usually made from________________?A. Charcoal
B. Silicon Carbide
C. Nichrome
D. GraphiteWhen one leg of parallel circuit is opened out the total current will______________?
When one leg of parallel circuit is opened out the total current will______________?
A. reduce
B. increase
C. decrease
D. become zeroThe resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be
The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be
A. R Ω
B. 2R Ω
C. 4R Ω
D. 8R ΩAs per law of resistance, the resistance of the conductor is inversely proportional to its cross-sectional area i.e. it is inversely proportional to the square of the diameter of cross-sectional area of the conductor. As per same law of resistance, the resistance of the conductor is directly proportional to the length of the conductor.
A glass rod when rubbed with silk cloth is charged because__________?
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 chargeBulbs in street lighting are all connected in_____________?
Bulbs in street lighting are all connected in_____________?
A. parallel
B. series
C. series-parallel
D. end-to-end