Advertisements
Advertisements
Question
The alternating current in a circuit is described by the graph shown in figure. Show rms current in this graph.
Advertisements
Solution
Graph or rms current is shown below by dotted line
`I_(rms) = sqrt((1^2 + 2^2)/2) = sqrt(5/2)` = 1.6A
APPEARS IN
RELATED QUESTIONS
A device 'X' is connected to an ac source V = V0 sin ωt. The variation of voltage, current and power in one cycle is shown in the following graph:
(a) Identify the device 'X'.
(b) Which of the curves A, B and C represent the voltage , current and the power consumed in the circuit? Justify your answer.
(c) How does its impedance vary with frequency of the ac source? Show graphically.
(d) Obtain an expression for the current in the circuit and its phase relation with ac voltage.
A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply.
- What is the rms value of current in the circuit?
- What is the net power consumed over a full cycle?
A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply.
What is the net power consumed over a full cycle?
Effective voltage Vrms is related to peak voltage Vo by ______.
Study the circuits (a) and (b) shown in figure and answer the following questions.
 (a) |
 (b) |
- Under which conditions would the rms currents in the two circuits be the same?
- Can the rms current in circuit (b) be larger than that in (a)?
If the reading of the voltmeter V1 is 40 V, then the reading of voltmeter V2 is ______.
The average value of alternating current over one complete cycle is ______.
The RMS (root mean square) value of current is related to peak current im by ______.
The standard household supply in India is 220 V. This value refers to ______.
The average power dissipated in a resistor when an AC current of peak value im flows through it is ______.
Which expression describes alternating voltage that varies sinusoidally with time?
In a pure resistor AC circuit, how are the AC voltage source and resistor \[R\] connected?
In \[v=v_m\sin\omega t\], what does \[v_m\] represent?
In \[v=v_m\sin\omega t\], what does \[t\] represent?
What does Kirchhoff's Voltage Law give when the only element connected to the AC voltage source is resistor \[R\]?
What is the final current equation for a pure resistor AC circuit?
Which notation identifies the RMS values of voltage and current?
What is the peak voltage of a \[220\,\mathrm{V}\] AC supply?
