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In a series L.R circuit, power of 400 W ...

In a series L.R circuit, power of 400 W is dissipated from a source of 250 V, 50 Hz. The power factor of the circuit is 0.8. In order to bring the power factor to unity, a capactor of value C is added in series to the L and R. Taking the value of C as `(n/(3pi))muF`, then value of n is ____________

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