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A bulb is rated as 55 W and 220 volt . I...

A bulb is rated as 55 W and 220 volt . It is connected across the supply of 220 V- 50 Hz. Calculate (a) rms current flowing through the bulb and (b) Peak current flowing through the bulb .

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To solve the problem, we will calculate the RMS current flowing through the bulb and then find the peak current. ### Given Data: - Power of the bulb (P) = 55 W - RMS Voltage (V_rms) = 220 V ### Step 1: Calculate the Resistance of the Bulb We can use the formula relating power, voltage, and resistance: ...
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MODERN PUBLICATION-ALTERNATING CURRENT -CHAPTER PRACTICE TEST
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  2. Write the relation between the rms value and peak value of AC.

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  6. Why do we prefer a choke coil to a rhestat in controlling a.c.?

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  8. A step down transformer converts transmission line voltage from 2200 V...

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  9. The rms value of current in a 50 Hz AC source is 4 A. What will be the...

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  10. An electric heater is connected to DC and AC sources of equal voltage ...

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  11. Under which condition the current will lag behind the voltage? Explain...

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  12. When an ac source is connected to an ideal capacitor, show that the av...

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  13. Show that in the free oscillations of an LC circuit, the sum of energi...

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  14. Can the voltage drop across the inductor or capacitro in a series LCR ...

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  15. An alternating voltage given by V = 240 sin 314 t is connected across ...

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  16. What is power factor of an LCR circuit ? Explain on the basis of power...

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  17. (a) In a series LCR circuit connected across an AC source of varible f...

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