Which of the following material has nearly zero temperature co-efficient of resistance_________?
Which of the following material has nearly zero temperature co-efficient of resistance_________?
A. Manganin
B. Porcelain
C. Carbon
D. Copper
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Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across______________?
Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across______________?
A. Rl
B. Ri
C. either Rl or Ri
D. none of them74. Sparking occurs when a load is switched off because the circuit has high_________?
74. Sparking occurs when a load is switched off because the circuit has high_________?
A. resistance
B. inductance
C. capacitance
D. impedanceElectric pressure is also called________?
Electric pressure is also called________?
A. resistance
B. power
C. voltage
D. energyIn a lamp load when more than one lamp are switched on the total resistance of the load_____________?
In a lamp load when more than one lamp are switched on the total resistance of the load_____________?
A. increases
B. decreases
C. remains same
D. none of the aboveWhen resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?
A. decrease
B. increase
C. remain constant
D. none of the aboveIf a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes______________?
If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes______________?
A. 0.4 ohm
B. 0.6 ohm
C. 0.8 ohm
D. 1.0 ohm