A DC circuit contains 10- of resistance in series with 10 H coil- The impedance of the circuit is

The correct option is A 10Ω In a DC circuit #160; #160; f = 0 #160;So, inductive reactance #160; X _ L =ω L=2π fL=0 Therefore, impedanc ...

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Standard XII

Physics

Electrical Oscillations

A DC circuit ...

Question

A DC circuit contains $10 Ω$ of resistance in series with $10 H$ coil. The impedance of the circuit is

10 Ω

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20 Ω

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1 Ω

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Zero

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Solution

The correct option is A $10 Ω$
In a DC circuit $f = 0$
So, inductive reactance $X_{L} = ω L = 2 π f L = 0$
Therefore, impedance of the circuit $Z = \sqrt{R^{2} + X_{L}^{2}}$
$⟹ Z = R = 10 Ω$

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A DC circuit contains 10Ω of resistance in series with 10H coil. The impedance of the circuit is

The correct option is A 10ΩIn a DC circuit f=0 So, inductive reactance XL=ωL=2πfL=0Therefore, impedance of the circuit Z=√R2+X2L⟹ Z=R=10Ω

A DC circuit contains $10 Ω$ of resistance in series with $10 H$ coil. The impedance of the circuit is

The correct option is A $10 Ω$
In a DC circuit $f = 0$
So, inductive reactance $X_{L} = ω L = 2 π f L = 0$
Therefore, impedance of the circuit $Z = \sqrt{R^{2} + X_{L}^{2}}$
$⟹ Z = R = 10 Ω$