A series R-C circuit with R = 3 Ω and X_{C} = 4 Ω at 50 Hz is supplied with a voltage V = 50 + 141.4 sin 314 t. What is the RMS value of the current flowing through the circuit?

The amplitude of a random signal uniformly distributed between - 5 V and 5 V If the signal to quantization noise ratio required in uniformly quantizing the signal is 4.5dB, the step size of the quantization is approximately