4. A 16-2 loudspeaker, an 8.0-2 loudspeaker, and a 4.0-2 loudspeakerare connected in parallel across the terminals of an amplifier.Determine the equivalent resistance of the three speakers, assumingthat they all behave as resistors.c. 0.54N5. A 60.0-W lamp is placed in series with a resistor and a 120.0-Va. 0.342b. 0.440d. 0.642source. If the voltage across the lamp is 25 V, what is the resistance Rof the resistor?a. 1.0x10'nb. 2.0x10'nc. 3.0x10'nd. 4.0x10'N

Let us assume that R1 , R2 and R3 be the resistance of these loudspeaker. It is given that…

4. A 16-2 loudspeaker, an 8.0-2 loudspeaker, and a 4.0-2 loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. a. 0.342 b. 0.442 c. 0.542 d. 0.64N 5. A 60.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 25 V, what is the resistance R of the resistor? a. 1.0x10'n b. 2.0x10'n c. 3.0x10'n d. 4.0x10'n

4. A 16-2 loudspeaker, an 8.0-2 loudspeaker, and a 4.0-2 loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. a. 0.342 b. 0.442 c. 0.542 d. 0.64N 5. A 60.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 25 V, what is the resistance R of the resistor? a. 1.0x10'n b. 2.0x10'n c. 3.0x10'n d. 4.0x10'n

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 14CQ: The power dissipated in a resistor is given by P = V2/R, which means power decreases if resistance...

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