please label answers. thanks in advance A 200 Ohm resistor is connected to an AC

Question

please label answers. thanks in advance

A 200 Ohm resistor is connected to an AC source with epsilon 0 = 10 V. What is the peak current through the resistor if the emf frequency is (a) 100 Hz? (b) 100 kHz? A resistor dissipates 2.00 W when the rms voltage of the emf is 10.0 V. At what rms voltage will the resistor dissipate 10.0 W? The primary coil of a transformer is connected to a 120 V/60 Hz wall outlet. The secondary coil is connected to a lamp that dissipates 60 W. What is the rms current in the primary coil?

Explanation / Answer

1.

Eo =10 V

Peak current

Io =Eo/R =10/200

Io =0.05 A or 50 mA

a)

Io=0.05 A or 50 mA

b)

Io =0.05 A or 50 mA
2.

P=V^2/R

R=V^2/P =10^2/2

R=50 ohms

=>V=sqrt[PR] =sqrt[10*50[

V=22.36 V

3.

Power remains same in primary and seconadrary

P =VI

I=P/V =60/120

I=0.5 A

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.