A substance whose molecules consist of dissimilar atoms is called____________?
A substance whose molecules consist of dissimilar atoms is called____________?
A. semi-conductor
B. super-conducto
C. compound
D. insulator
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All good conductors have high____________?
All good conductors have high____________?
A. conductance
B. resistance
C. reluctance
D. thermal conductivityThree identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be_________________?
Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be_________________?
A. 9 times
B. 1/9 times
C. 1/3 times
D. 3 timesCapacitor does not allow the sudden change of ?
Capacitor does not allow the sudden change of ?
A. current
B. voltage
C. power
D. None of the aboveThe expression of current through a capacitor is
For sudden change of voltage infinite current is required. But practically it is not possible.
Practical capacitor circuit has finite value of time constantWith rise in temperature the resistance of semi-conductors_________________?
With rise in temperature the resistance of semi-conductors_________________?
A. decreases
B. increases
C. first increases and then decreases
D. remains constantInternational ohm is defined in terms of the resistance of________________?
International ohm is defined in terms of the resistance of________________?
A. a column of mercury
B. a cube of carbon
C. a cube of copper
D. the unit length of wireWhen a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is___________?
When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is___________?
A. 1 n-mho
B. 106 mho
C. 1 milli-mho
D. none of the above