Question

Q4. A 50 ohm resistor and a capacitor reactance of
120 ohm are in series across an ac source. What
is the circuit impedance Z?
(A) 170 ohm
(B) 130 ohm
(C) 70 ohm
(D) 13 ohm​

Answer 1

Answer:

I think

Explanation:

option b) 130 ohm

Answer 2

${\large{\underline{\blue{\bold{Answer:}}}}} \\ \\ \sf : \implies170Ω$

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To find:

Equivalent resistance in circuit

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Given:

2 resistors in a circuit are attached in series which are of 50Ω and 120Ω.

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Concept used:

To find equivalent resistance in series combination of resistance we have to apply formula

Re=R1+R2

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Solution:

Equivalent resistance=R1+R2

$\boxed{\sf {Re=50Ω+120Ω}}$

$\boxed{ \sf {Re=170Ω}}$

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Related formulae:

• Resistance in series

$\large \sf:⟹R1+R2+R3$

• Parellel connection of resistance

$\large \sf: \implies \frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3 }$