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Which of the following combinations should be selected for better tuning of an LCR circuit used for communication? [NCERT Exemplar] (a) R = 20, L= 1.5 H, C = 35 μF. (b) R = 25 , L = 2.5 H, C = 45 μF. (c) R = 15 , L = 3.5 H, C = 30 μF. (d) R = 25 , L = 1.5 H, C = 45 μF. |
| Answer» GIVEN = (a) R = 20, L= 1.5 H, C = 35 μF. (b) R = 25 , L = 2.5 H, C = 45 μF. (c) R = 15 , L = 3.5 H, C = 30 μF. (d) R = 25 , L = 1.5 H, C = 45 μF. to find = suitable combination for better tuning an LCR.solution, for better tuning of an LCR CIRCUIT used for communication MUST be posesed high quality factor of resonnce.so, Q = 1/R , in option 3rd, the Q factor is highest.Q = 1/15 Q = 22.7 the value of Q in case of a , b and d can be 10.35,9.42 and 7.30 respectively.the highest value of Q is present in OPTION C so option C is the correct answer. | |