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Electric Circuits
An arc lamp requires a direct current of 10 A at 80 V to function. If it is connected to a 220 V (rms), 50 Hz AC supply, the series inductor needed for it to work is close to
Electric Circuits
A 100cm of wire was used in the heating of a 12v 6ow heater. The length of wire of the same material having double the cross-sectional area that would be required for a 24v, 60w element is __________ cm assuming final temperature is the same
Electric Circuits
A 3v battery with internal resistance 0.5 ohms is connected across a parallel combination of 1 ohm and 2 ohms resistances. The current in the 2 ohms resistance is ____________
Electric Circuits
In an experiment, 1/V is plotted against 1/I. The physical significance of the slope of the graph is _______
Electric Circuits
A 1 ohm resistor is to be made from a 1mm diameter wire of resistivity 2.2 x 10-8 ohm m. the length of the wire to one decimal is ________cm
Electric Circuits
The difference between the emf of a battery and the lost volts when discharging is called ______ potential difference or voltage
Electric Circuits
In a potentiometer, the wire PQ has the resistance of 5 ohms and the driver cell has an emf of 12v. What is the value of the resistance R if a balance point is obtained at 0.6m along PQ when measuring an emf of 6mv.
Electric Circuits
Calculate the resistance of 180 m of silver wire having a cross section of
0.33mm2
. The resistivity of silver is
1.6×10−8Ωm
0.33mm2
. The resistivity of silver is
1.6×10−8Ωm
Electric Circuits
Explain the process of generating oscillations in a Wein bridge oscillator.
Electric Circuits
where between two charges of 2.0mC and -2.0mC which have been separated by 1.5m will the electrical potential difference be equal to zero
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#339914 on Dec 2023
#339914 on Dec 2023