1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MrRissso [65]
3 years ago
7

A 3.0 \Omega Ω resistor is connected in parallel to a 6.0 \Omega Ω resistor, and the combination is connected in series with a 4

.0 \Omega Ω resistor. If this combination is connected across a 12.0 V battery, what is the power dissipated in the 3.0 \Omega Ω resistor?
Physics
1 answer:
GarryVolchara [31]3 years ago
7 0

Answer:

The power dissipated in the 3 Ω resistor is P= 5.3watts.

Explanation:

After combine the 3 and 6 Ω resistor in parallel, we have an 2 Ω and a 4 Ω resistor in series.

The resultating resistor is of Req=6Ω.

I= V/Req

I= 2A

the parallel resistors have a potential drop of Vparallel=4 volts.

I(3Ω) = Vparallel/R(3Ω)

I(3Ω)= 1.33A

P= I(3Ω)² * R(3Ω)

P= 5.3 Watts

You might be interested in
The heating of the filament is what causes the light production (photon emission), and heating is caused by the current in the l
alexira [117]

Answer:

explained

Explanation:

Yes, the heating of filament is what causes the light production (photon emission), and this heating is caused because of current in the light bulb

(H= i^2*R*t i=current, H= heat, t= time and R= resistance).But using constant current source is not a good idea because in constant current source resistance is very low that can cause short circuit and ultimately fusing it. Whereas in constant voltage source current adjusts itself and prevents fusing because of high resistance in the circuit.

8 0
3 years ago
An object accelerates from rest at a constant rate covering a distance of 18 meters in 3 seconds. What is its rate of accelerati
ozzi

Answer:

4

  1. 18*2=36
  2. 36/(3*3)=4
4 0
3 years ago
Read 2 more answers
ate around its central axis. A rope wrapped around the drum of radius 1.24 m exerts a force of 4.56 N to the right on the cylind
Mashcka [7]

Answer:

Magnitude the net torque about its axis of rotation is 1.3338 Nm

Explanation:

The radius of the wrapped rope around the drum, r = 1.24 m

Force applied to the right side of the drum, F = 4.56 N

The radius of the rope wrapped around the core, r' = 0.57 m

Force on the cylinder in the downward direction, F' = 7.58 N

Now, the magnitude of the net torque is given by:

\tau_{net} = \tau + \tau'

where

\tau = Torque due to Force, F

\tau' = Torque due to Force, F'

\tau = F\times r\tau' = F'\times r'

Now,

\tau_{net} = - F\times r + F'\times r'\tau_{net} = - 4.56\times 1.24 + 7.58\times 0.57 \\\\= - 1.3338\ Nm

The net torque comes out to be negative, this shows that rotation of cylinder is in the clockwise direction from its stationary position.

Now, the magnitude of the net torque:

|\tau_{net}| = 1.3338\ Nm

8 0
3 years ago
Two students measure the time constant of an RC circuit. The first student charges the capacitor using a 12 V battery, then lets
luda_lava [24]

Answer:

The answer is: c.) Both students get the same time constant, since the time constant does not depend on the charge on the capacitor

Explanation:

Both students, because the time constant is not dependent on the capacitor charge.  We can express the equation of the time constant as follows:

Time constant = RC

In this equation it is observed that the time constant is equal to the multiplication of the resistance (R) multiplied by the capacitance (C)

8 0
3 years ago
The size of the Milky Way is determined from studying_______
Gemiola [76]

Answer:

expansions

i think

Explanation:

5 0
3 years ago
Other questions:
  • An airtight box has a removable lid of area 1.00 10-2 m2 and negligible weight. the box is taken up a mountain where the air pre
    14·1 answer
  • Charge Q is distributed uniformly throughout the volume of an insulating sphere of radius R = 4.00 cm. At a distance of r = 8.00
    11·1 answer
  • An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 6.25 m/s2.
    10·2 answers
  • 680 hertz 0.5 meters whats the speed of the sound of the wave
    7·1 answer
  • An 3.7 lb hammer head, traveling at 5.8 ft/s strikes a nail and is brought to a stop in 0.00068 s. The acceleration of gravity i
    10·1 answer
  • The current in a hair dryer measures 20.0 amps. The resistance of the hair dryer is 6 ohms. What is the voltage?
    14·1 answer
  • The average speed of a nitrogen molecule in air is about 6.70×102 m/s, and its mass is 4.68×10-26 kg.
    10·1 answer
  • What is the net force on the purple ring in the picture below. _________
    11·1 answer
  • Force can change the ____________ and _______________ of an object​
    13·1 answer
  • Jerome does not pay his balances off his credit cards each month. he often has to pay interest and finance charges. what is jero
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!