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## Homework Statement

The figure below shows the time variation of the current through an electrical heater when it is plugged into a 240 V, 50 Hz outlet.

1) What is the peak voltage?

2) What is the rms value of the current drawn by the heater?

3) What is the resistance of the heater?

4) If t1 = 0.06 s, what is the value of t2? Note: The graph does not start at t = 0 s.

## Homework Equations

1) RMS voltage value = [tex]\frac{Vo}{\sqrt{2}}[/tex] , the hint given for the problem is Use the relation between the peak voltage and the rms voltage.

2) RMS current value = [tex]\frac{Io}{\sqrt{2}}[/tex]

3) R = V/I

4) Couldn't find an equation in my book. HINT: Remember the relation between frequency and the time to complete a cycle. How many cycles are between t1 and t2?

## The Attempt at a Solution

1) 240 V/[tex]\sqrt{2}[/tex] = 169.7 Volts

2)

3) R = 240 V/I

4) I know that there is 2 cycles betweem t1 and t2.