All categories

2 years ago

What is the power of 4ohm resistor connected to a 12v battery?

Physics

2 answers:

NemiM [27]2 years ago

8 0

Answer:

36watts

Explanation:

Data obtained from the question include:

R (Resistor) = 4 Ohms

V (Voltage) = 12V

P (power) =?

P = IV

Recall: I = V/R

P = V^2 /R

P = (12)^2 /4

P = 144/4

P = 36watts

Therefore, power is 36watts

DochEvi [55]2 years ago

8 0

Answer:

= 36 watts

Explanation:

Power = I V

From ohms law

V = I R

divide both sides by R

V/R = I

I = V/R

therefore if, P = IV, put I = V/R into it

P= V/R × V

P = V² / R

Given, V = 12v

R = 4 ohms

Therefore

P= 12² / 4

P = 144/4

P = 36 watts

Power = 36 watts

I hope this was helpful, please rate as brainliest

You might be interested in

A water balloon was dropped from a high window and struck its target 1.1 seconds later. If the balloon left the person's hand at

valkas [14]

-5.5 is the answer to the question

8 0

2 years ago

Read 2 more answers

Find the kenetic energy of a car of mass 700kg racing with a velocity of 10m/s

fiasKO [112]

Answer:

35000 KJ

Explanation:

The equation for the kinetic energy is given by the formula :

$E_{k} = \frac{1}{2} mv^{2}$

$E_{k} = \frac{1}{2} (700)(10)^{2}$

$E_{k} = \frac{1}{2} (700)(100)$

$E_{k} = (350)(100)$ OR $E_{k} = \frac{1}{2} (70000)$

$E_{k} = 35000$

Units will be kilojoules since the units of mass was kilograms .

Our final answer is 35000 KJ

Hope this helped and have a good day

5 0

1 year ago

Which process can be used to power your Home? A solar thermal energy B solar electric energy C both solar thermal energy and sol

Ostrovityanka [42]

The correct answer is C both

7 0

2 years ago

A spring has an unstretched length of 10 cm. it exerts a restoring force f when stretched to a length of 11 cm. part a for what

rjkz [21]

13 cm
just solved the same question on mastering physics<span />

4 0

2 years ago

Read 2 more answers

A sample of a gas in a rigid container has an initial pressure of 5 atm at a temperature of 254.5 k. The temperature is decrease

skelet666 [1.2K]

The gas is in a rigid container: this means that its volume remains constant. Therefore, we can use Gay-Lussac law, which states that for a gas at constant volume, the pressure is directly proportional to the temperature. The law can be written as follows:

$\frac{P_1}{T_1} = \frac{P_2}{T_2}$

Where P1=5 atm is the initial pressure, T1=254.5 K is the initial temperature, P2 is the new pressure and T2=101.8 K is the new temperature. Re-arranging the equation and using the data of the problem, we can find P2:

$P_2 = T_2 \frac{P_1}{T_1}=(101.8 K) \frac{5 atm}{254.5 K}=2 atm$

So, the new pressure is 2 atm.

7 0

2 years ago