Posted by **Matt Will** on Thursday, August 9, 2012 at 5:53pm.

The output voltage of an AC generator is given by Δv = (180 V) sin (70πt). The generator is connected across a 13.0-Ω resistor.

(a) By inspection, what is the maximum voltage?

V

(b) By inspection, what is the frequency?

Hz

(c) Find the rms voltage across the resistor.

V

(d) Find the rms current in the resistor.

A

(e) Find the maximum current in the resistor.

A

(f) Find the power delivered to the resistor.

W

(g) Find the current when t = 0.0050 s.

A

- physics 102 -
**Elena**, Friday, August 10, 2012 at 9:36am
U = 180•sin (70πt).

Umax = 180 V

f=ω/2π=70π/2π =35 Hz,

rms U=Umax/√2= =0.707•Umax=0.707•180=127.3 V

U/R = (180/R)•sin (70πt)

I=(180/13) •sin (70πt)=13.85•sin (70πt)

Imax =13.85 A

rmsI= Imax/√2=0.707•Imax=

=0.707•13.85=9.8 A

Pmax=Imax•Umax=180•13.85=2493 W

P=I•U= 127.3•9.8 =1244.6W

I=13.85•sin (70πt)=

=13.85•si(70π •0.005)=

=13.85•0.89 =12.34 A

## Answer this Question

## Related Questions

- Physics - When a resistor is connected across the terminals of an ac generator (...
- Physics - When a resistor is connected across the terminals of an ac generator (...
- physics please help!! - 1. A 26.0-Ω resistor, a 12.0-µF capacitor, and a 17...
- physics - In a series circuit, a generator (1254 Hz, 13.8 V) is connected to a ...
- PHYSICS - An inductor (L = 405 mH), a capacitor (C = 4.43 µF), and a resistor (R...
- physics - An inductor (L = 405 mH), a capacitor (C = 4.43 µF), and a resistor (R...
- physics - An inductor (L = 405 mH), a capacitor (C = 4.43 µF), and a resistor (R...
- Physics - A 80.0 Hz generator with an rms voltage of 150 V is connected in ...
- Physics - Three resistors (14.4 Ω, 21.7 Ω, 14.1 Ω) are connected ...
- physics - a 20 ohm and 60 ohm resistors are connected in series to a DC ...