CBSE 12th Standard Physics Subject Alternating Current Ncert Exemplar 2 Mark Questions With Solutions 2021
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CBSE 12th Standard Physics Subject Alternating Current Ncert Exemplar 2 Mark Questions With Solutions 2021
12th Standard CBSE
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Reg.No. :
Physics
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A capacitor C, a variable resistance R and a bulb B are connected in series to the AC mains in circuit as shown in the figure.The bulb glows of the bulb change, if
(i) a dielectric slab is introduced between the plates of the capacitor, keeping resistance R to be same;
(ii) the resistance R is increased keeping will capacitance?
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Show that heat produced in a cycle of AC is same as the heat produced by DC with \(I={ I }_{ rms }\).
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In series L-C-R circuit, the plot of Imax\(\omega \) versus is shown in the figure. Find the bandwidth and mark in the figure.
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A series L-C-R circuit with \(R=20\Omega \), L = 1.5H and \(C=5\mu F\) is connected to a variable frequency of 200 V AC supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit, what is the average complete cycle?
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Obtain the resonant frequency \(({ \omega }_{ r })\) of a series L-C-R circuit with L = 2.0 H, \(C=32\mu F \) and \(R=10\Omega \) . What is the Q-value of this circuit?
