physics

posted by .

current through a device is 0.30 A, and the resistance in the device is 40 Ù. How many 1.5 V batteries are required to run the device

  • physics -

    I assume 40 Ù means 40 ohms.

    V = I*R = 0.30*40 = 12 volts

    That would require 12/1.5 = 8 1.5 volt batteries as the power supply.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    An electrical device with a resistance of 323.0 k(omega sign) will allow a current of 21.0 A to flow through it if a voltage drop of _______________ Volts is impressed across the device.
  2. Technology

    I posted this question a while back on jiskha. i don't even remember if i got an answer or not. here it is: the montior is a part of the computer that would be considered a(n) a. input device b. processing device c. output device d. …
  3. Technology

    'I posted this question a while back on jiskha. i don't even remember if i got an answer or not. here it is: the montior is a part of the computer that would be considered a(n) a. input device b. processing device c. output device …
  4. physics

    A particular amplifying device supplies electrons in a manner such that the current passing out of the device is given by I(t) = (Io)e^kt, where I(0) = Io = 2A.The current measured 12 seconds later is 3.4 A.Find (a)The charge Q that …
  5. Science

    To find the current in a complex circuit, it is necessary to know the potential difference in each device in the circuit. current in each device in the circuit. equivalent resistance of the circuit. number of branches in the circuit. …
  6. Technology

    A printer is a/an: Choose all which apply. a) input device b) output device c) data storage device d) operating system
  7. physics Important please

    A potential difference of 12.0V is maintained across an electrical device with a resistance of 10.0Ω. What total charge passes through a cross section of wire attached to this device over a period of 4.00s?
  8. Electricity and Electronics

    A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force. The resistance of the first device is 12 ohms, the resistance of the second device is 4 ohms, and the voltage developed …
  9. computer

    You are having problems on your Windows 7 computer and you pull up Device Manager to see if there are any alerts. Two of your devices have yellow exclamation points over them. What does this most likely indicate?
  10. chemistry

    A student designs an ammeter (a device that measures electrical current) that is based on the electrolysis of water into hydrogen and oxygen gases. When electrical current of unknown magnitude is run through the device for 1.00 min …

More Similar Questions