Past exam of the physics 2 paper of the University of Oxford / 2022 / 8 / b / ii

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- Solution ii

Solution

At the balance angular frequency,

Z = W

and the two voltage dividers have the same ratio. Thus

V_{oc} (ω_{0}) = 0, V_{A} (ω_{0}) = 0, I_{A} (ω_{0}) = 0.

This zero detector electric current is the operational condition used to find

R_{v}

and

ω_{0}

.

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