An amplitude ratio of 0.1 corresponds to ______________ decibels
9. An amplitude ratio of 0.1 corresponds to ______________ decibels
o -10
o -20
o 10
o 20
Ans: B
o -10
o -20
o 10
o 20
Ans: B
In the circuit shown, the ammeter reads 1 ampere and voltmeter 10 volts. The internal resistance of the ammeter is 1 ohm and that of voltmeter is 50 ohms. The value of R is _______.
(a) 111 .2 ohms (b) 120 ohms (c) 100 ohms (d) 112 ohms Ans: D
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