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In an ac circuit , the flow of current is opposed by inductors and capacitors.The is called reactance.An electric bulb B and a parallel plate capacitor C are connected in serise to an AC mains as shown in the figure.The bulb glows with some brightness . How will the glow of the bulb be affected on introducing a dielectric slab between the plates of the capacitor?Given reasons in support of your answer, (##ANE_RJB_PHY_XII_C07_E03_004_Q01##) |
| Answer» Solution :Bulb glows withgreater brightness Introduction of the dielectric SLAB incrases the capacity of the capacitor by K TIMES, where K is the DIELECTRICCONSTANT of the MATERIAL between the plates , Hance capacitiv reactanc `X_E=1/C(OMEGA)` decreases. | |