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As the frequency supplied by the generator drops lower, (1) bulb A brightens, bulb B dims. (2) bulb A brightens, bulb

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As the frequency supplied by the generator drops lower, (1) bulb A brightens, bulb B dims. (2) bulb A brightens, bulb - PowerPoint PPT Presentation


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A B As the frequency supplied by the generator drops lower, (1) bulb A brightens, bulb B dims. (2) bulb A brightens, bulb B remains unchanged. (3) bulb A dims, bulb B brightens. (4) bulb A dims, bulb B remains unchanged. (5) both bulbs brighten. (6) both bulbs dim. A B

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PowerPoint Slideshow about 'As the frequency supplied by the generator drops lower, (1) bulb A brightens, bulb B dims. (2) bulb A brightens, bulb' - emily


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Presentation Transcript
slide1
A

B

As the frequency supplied by the generator drops lower,

(1) bulb A brightens, bulb B dims.

(2) bulb A brightens, bulb B remains unchanged.

(3) bulb A dims, bulb B brightens.

(4) bulb A dims, bulb B remains unchanged.

(5) both bulbs brighten.

(6) both bulbs dim.

slide2
A

B

XL=2pfL increases with f

so drops in value as f drops.

More current flows through

this branch with lower f!

XC=1/(2pfC)

increases as f

drops: less

current flows!

As the frequency supplied by the generator drops lower,

(1) bulb A brightens, bulb B dims.

(2) bulb A brightens, bulb B remains unchanged.

(3) bulb A dims, bulb B brightens.

(4) bulb A dims, bulb B remains unchanged.

(5) both bulbs brighten.

(6) both bulbs dim.

slide3
vL

vR

vL+ vR

slide4
vL

vR

vC

vtotal

slide5
A series RLC circuit has a resistance

of 25.0, a capacitance of 50.0mF,

and an inductance of 0.300 H. If

driven by a 120v, 60Hz source, find:

(a) the impedance of the circuit.

(b) the current in the circuit.

(c) the phase angle between current and voltage.

(d) the rms voltage drop across each component.

(e) the power dissipated in the circuit.

(f) What f would make this circuit completely resistive?

(g) What would the power dissipated in the resistor be then?

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