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प्रश्न
The potential difference across the resistor is 160V and that across the inductor is 120V. Find the effective value of the applied voltage. If the effective current in the circuit be 1.0 A, calculate the total impedance of the circuit.
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उत्तर
eL = 120 V eL = i × L
eR = 160V eR = iR
`R = e/i = 160/1 = 160 Ω `
`X_L = 120/1 = 120 Ω `
`Z = sqrt(R^2 + X_L^2 `
` = sqrt ((160)^2 + (120)^2)`
` = sqrt( 25600 + 14400)`
` = sqrt(40000)`
`Z = sqrt( 4 xx 1.4 ) = 200 Omega`
Z = 200 Ω
effecience voltage
e = iZ
e = i × 200 = 200V
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