math

The equation P=240I-8I^2 represents the power, P, (in watts) of a 240 volt circuit with a resistance of 8 ohms when a current of I amperes is passing through the circuit.

(a)Find the maximum power (in watts)that can be delivered in this circuit.
(Find the current (in amperes) needed to develop this maximum power.

I have trouble to find the maximum power,please help! THANKS A LOT!

  1. 👍
  2. 👎
  3. 👁
  1. If you are studying Calculus, find the derivative of your function, set it equal to zero and solve for I

    If not, complete the square and get the result that way.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    Electric bulb is Marked 60 watts 120 volt what is the resistance of filament of bulb

  2. Science

    One light bulb in a string of lights goes out this causes all other lights in string to go out. This is example of A. Resistor B. parallel circuit C. Closed circuit***** D. Series circuit When a switch is turned from the off to

  3. Physics

    A circuit consisting of three resistance 12ohm, 18ohm and 36ohm respectively joined in parallel, and connected in series with the fourth resistance. The whole circuit is supplied at 60volts and it is found that the power

  4. Physics ASAP!!

    1. Three resistors are placed in series. They have the following resistances: R1 = 20 ohms, R2 = 20 ohms, R3 = 10 ohms. What current would be moved through this circuit by a 5-V power supply? A. 1.0 A B. 0.10 A C. 25 A D. 250 A 2.

  1. Electrotechnics N4

    A circuit,consisting of 3 resistances 12,18 & 36 ohms respectively joined in parallel is connected in series with fourth resistance.the whole is supplied at 60 volt & it is found that the power dissipated in the 12Ohm resistance

  2. Physical Science

    What will be the total resistance and current in a parallel circuit with a 15-volt battery and 3 10-ohm resistors?

  3. Sciencee

    Two electrical circuits have the same 15-volt batteries. Circuit A has 2 ohms of resistance, and circuit B has 6 ohms of resistance. Which of the following statements is correct? (1 point) • Circuit B has the same amount of

  4. algebra

    If an electronic circuit experiences a loss of 3 decibels with an input power of 6 watts, what would its output power be, to the nearest watt?

  1. math

    An electric motor that rated at 5 horse power can produce _____ in equivalent work. 0.007 watts 5 watts 17.05 watts 3730 watts

  2. physics

    An alarm clock uses 5.0 watts of electric power. If the clock is plugged into 120 volts outlet, what electric current is in the clock's circuit?

  3. physics

    which one of the following statements concerning an ac circuit is true? a) when only resistance is present in an ac circuit, voltage and current are in phase. b) on average, the power dissipated by resistor in an ac circuit is

  4. science

    four 9-volt barreries are connected in parallel. How much voltage is active across the circuit?

You can view more similar questions or ask a new question.