All categories

2 years ago

A battery of emf 20v and internal resistance 1 ohms connected in series with an external resistor4 ohms what is

Physics

1 answer:

Harlamova29_29 [7]2 years ago

8 0

Answer:

The total rate at which electrical energy is dissipated by the two resistors is 48 W.

The given parameters;

First resistor, R₁ = 25 ohm

Second resistor, R₂ = 15 ohm

power dissipated in the first resistor, P₁ = 36 W

In series circuit arrangement, the current flowing in each resistor is the same.

The current flowing in the first resistor is calculated as follows;

P = I²R₁

The equivalent resistance of the series arrangement is calculated as;

R = R₁ + R₂

R = 25 + 15

R = 40 ohms

The total rate at which electrical energy is dissipated by the two resistors;

P = I²R

P = 1.2(40)

P = 48 W

Thus, the total rate at which electrical energy is dissipated by the two resistors is 48 W.

Explanation:

You might be interested in

An 820 N Marine in basic training climbs a 12.0-m vertical rope at a constant speed in 8.00 s. What is her power output

sweet-ann [11.9K]

Answer:

1230 W

Explanation:

P = $\frac{W}{t}$ = $\frac{Force * distance}{time}$ = $\frac{820 N * 12.0 m}{8.00 s}$ = 1230 Watts

6 0

4 years ago

Future passive of( win)

Inessa05 [86]

Answer:

three point charge positioned one x-axis if the charge and corresponding positions are +32Mc x=0 +20Mc x=40cm - 60Mc x=60cm find force 32Mc

Explanation:

7 0

3 years ago

Which of the following processes DOES NOT occur during the convective transfer of heat within a container of air? Group of answe

vovangra [49]

The volume of a warmed part of the air is reduced and its density increases.

Explanation:

In a convective form of heat transfer, the volume of a warmed part of air is not reduced and its density does not increase.

During convection, heat causes the warm part of the air to expand and its volume increases. When volume increases, density is reduced.

Convection is a form of heat transfer that involves the actual movement of particles of the medium.
It usually occurs in fluids i.e gases and liquids.
In convection, the cold part exerts a buoyant force on the warmer air below and causes it to rise.
As the warmer part is rising the cooler part replaces it and a convective cell is formed in the process.

Learn more:

Energy transfer in the sun brainly.com/question/1140127

#learnwithBrainly

7 0

4 years ago

A car speedometer has a 6% uncertainty. What is the range of possible speeds when it reads 100 km/h?

MAVERICK [17]

<span>Range = 88.5 Km/h - 94.5 Km/h</span><span>
</span>

3 0

3 years ago

During the experiment if you could double the breakaway magnetic force with all other quantities left unchanged, what is the new

sergiy2304 [10]

There are some missing information in the question.
However, since you are talking about magnetic force, I think you refer to the Lorentz force. When a particle of charge q and velocity v is immersed in a magnetic field of intensity B, the force acting on the particle is:
$F=qvBsin\theta$
where $\theta$ is the angle between the magnetic field and the direction of the particle.
Therefore, if force F is doubled, then also the velocity v must be double of its initial value:
$v=2v_0$

6 0

3 years ago