In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is
In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is
A. 33 V
B. 66 v
C. 80 V
D. 132 V
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A field of force can exist only between_____________?
A. two molecules
B. two ions
C. two atoms
D. two metal particlesAn instrument which detects electric current is known as_____________?
An instrument which detects electric current is known as_____________?
A. voltmeter
B. rheostat
C. wattmeter
D. galvanometerWhich one of the following does not have negative temperature co-efficient ____________?
Which one of the following does not have negative temperature co-efficient ____________?
A. Aluminium
B. Paper
C. Rubber
D. MicaInductor does not allow the sudden change of
Inductor does not allow the sudden change of
A. current
B. voltage
C. power
D. None of the aboveVoltage developed across an inductor is expressed bY
Sudden change of current means di will change at dt → 0 (dt tends to zero), so sudden change of current means infinite voltage. Therefore it is not possible.Two resistors are said to be connected in series when___________?
Two resistors are said to be connected in series when___________?
A. same current passes in turn through both
B. both carry the same value of current
C. total current equals the sum of branch currents
D. sum of IR drops equals the applied e.m.f.The rating of a fuse wire is always expressed in________________?
The rating of a fuse wire is always expressed in________________?
A. ampere-hours
B. ampere-volts
C. kWh
D. amperes