Physics Ncert Solutions Class 12th Alternating Current Overview Class 12th Physics Alternating Current

7.1 A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply.

(a) What is the rms value of current in the circuit?

(b) What is the net power consumed over a full cycle?

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Payal Gupta | Contributor-Level 10

8 months ago

7.1 Resistance of the resistor, R = 100 Ω

Supply voltage, V = 220 V

Supply frequency, $ν$ = 50 Hz

The rms value of current is given as, I = $\frac{V}{R}$ = $\frac{220}{100}$ = 2.2 A

The net power consumed over a full cycle is given as P = VI = 220 $* 2.2$ = 484 W

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$I = Q_{0 . ω}$

$= \frac{C V}{\sqrt[]{L C}} = V \sqrt[]{\frac{C}{L}}$

$= 12 \sqrt[]{\frac{100 \times 1 0^{- 6}}{10 \times 1 0^{- 3}}}$

= 1.2 A

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Physics Ncert Solutions Class 12th 2023

Physics Ncert Solutions Class 12th 2023

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