The temperature-resistance coefficient of pure gold is
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VL= VCin a series RLCcircuit when
Which of the following is a disadvantage of a wire-wound resistor?
What value of R is needed with a 0.05 F Cfor an RCtime constant of 0.02 s?
In a pure capacitancea
Which of the following capacitors are used only in dc circuits?
When current and voltage arte in phase in an ac circuita the ___ is equal to zero.
In an RL series circuita
If the capacitance of mica capacitor is 5 times the capacitcitora then the relative permittivity of…
The reason why alternating current can induce voltage is
In an ac circuit with a resistive branch and an inductive branch in parallela the
How many degrees of phase represents one full cycle?
When two unequal values of resistors are connected in parallel across a dc sourcea greater current flows…
The ratio between the active power and the apparent power of a load in an ac circuit is called
The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
The potential gradient in a cable is maximum in
The charging of a capacitor through a resistance follows what law?
What increases the resistance of wire at high frequencies?
What is the rms value of a square wave?
The area of capacitor plates increases two timesa then its capacitance
Which one of the following elements serves as a protection against overload?
The rms value of a triangular or sawtooth waveform is ___ tim value.
Which of the following does not affect resistance?
A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a…
For a carbon composition resistora typical resistance values range from
A real current source has
What is the specific resistance of a pure silicon?
Which statement is true about a passive circuit?
What is the total effective capacitance of two 0.25 F capacitors connected in series?
Which of the following dielectric materials makes the highest-capacitance capacitor?
The reason why electrical appliances are not connected in series.
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