An FM radio station emits an electromagnetic wave which isreceived by a circuit

Question

An FM radio station emits an electromagnetic wave which isreceived by a circuit containing a 3.33 ×10–7 H inductor and a variablecapacitor set at 7.31 × 10–12 F.What is the frequency of the radio wave?

a. 1.02 × 108Hz
b. 1.58 × 108Hz
c. 9.40 × 107Hz
d. 9.80 × 107Hz
e. 8.80 × 107 Hz An FM radio station emits an electromagnetic wave which isreceived by a circuit containing a 3.33 ×10–7 H inductor and a variablecapacitor set at 7.31 × 10–12 F.What is the frequency of the radio wave? 1.02 × 108Hz 1.58 × 108Hz 9.40 × 107Hz 9.80 × 107Hz 8.80 × 107 Hz

Explanation / Answer

The frequency of the radio wave is given by          f=1/(2(LC)) Here L = 3.33 × 10–7H and C = 7.31 × 10–12F On substitution     f= 1.02 ×108 Hz

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