# Calculate the peak voltage

1.Calculate the peak voltage of a 60 Hz waveform if its instantaneous level is measured as 110 V at 2 ms from the instant of zero output. (Answer should be somewhere between 150 and 180 V.)

2. Determine the rms current in milliamps and average power dissipation in watts in a 330 Ω resistor with a 169.7 V peak sine wave applied across the resistor. (Answers should be somewhere between 350 and 380 mA for current and 30 to 50 W for power.)

3. A 297 Vrms sine wave is applied across a 3.9 kΩ resistor. Determine the following quantities regarding the resistor:

a)    Ipeak. (Answer should be somewhere between 100 and 115 mA.)

b)    Irms. (Answer should be somewhere between 60 and 90 mA.)

c)    Pavg. (Answer should be somewhere between 10 and 30 W.)

4.  A 120 Hz ac supply with a peak voltage of 100 V is applied across a 27 Ω resistor. Calculate the following values:

a)    peak resistor current. (Answer should be somewhere between 3 and 4 A.)

b)    rms resistor current. (Answer should be somewhere between 2 and 3 A.)

c)    Average power dissipated in the resistor. (Answer should be somewhere between 170 and 200 W.)