Ask question

Ask question

All categories

svetoff [14.1K]

2 years ago

15

What's the real power of a purely resistive circuit in which the RMS voltage measures 80 volts and the RMS current measures 5 am

ps?
A. 85 watts

B. 120 watts

C. 240 watts

D. 400 watts

1 answer:

Nat2105 [25]2 years ago

7 0

Answer:

D.400 watt

Explanation:

B/c <em>Pave</em><em>=</em><em>Irms</em><em>Vrms</em>
<em>Pave</em><em>=</em><em>(</em><em>5</em><em>)</em><em>(</em><em>8</em><em>0</em><em>)</em>
<em>Pave</em><em>=</em><em>4</em><em>0</em><em>0</em><em> </em><em>watt</em>

<em>where</em><em> </em><em>Pave</em><em> </em><em>=</em><em> </em><em>average</em><em> </em><em>power</em><em> </em>

<em>Irms</em><em>=</em><em>RMS</em><em> </em><em>current</em><em> </em><em>&</em>

<em>Vrms</em><em>=</em><em>RMS</em><em> </em><em>voltage</em>

You might be interested in

What will happen if a car experiences a 300 N force to the right from the engine and a separate 150 N force due to friction and

sveta [45]

If two forces act on an object in different direction with different the resultant force is the difference between them.the object acts in the direction of greater force.
so, 300-150=150N

7 0

3 years ago

Car A has a mass of 1,000 kg and is traveling 60 km/hr. Car B has a mass of 2,000 kg and is traveling 30 km/hr. Compare the kine

Artyom0805 [142]

Answer:

c) Twice as much

Explanation:

As we know that kinetic energy is given by the formula

$K = \frac{1}{2}mv^2$

here we know that

m = mass of the object

v = speed of the object

so here we will have kinetic energy of Car A

$K = \frac{1}{2}(1000)(60^2)$

$K_a = 1.8 \times 10^6$

now we have kinetic energy of B is given as

$K_b = \frac{1}{2}(2000)(30^2)$

$K_b = 0.9 \times 10^6$

So kinetic energy of Car A is double that of Kinetic energy of car B

3 0

4 years ago

Read 2 more answers

. An aeroplane takes 30 min to travel from Biratnagar to Kathmandu. If the air distance between

Nadya [2.5K]

<u>Answer:</u>

average velocity = $\bf 900 \space\ km/h$

<u>Explanation:</u>

We can find the average velocity using the following equation:

$\boxed{average \space\ velocity = \frac{total \space\ distance \space\ travelled}{ \space\ time \space\ taken}}$ .

In this case:

• total distance travelled = 450 km

• time taken = 30 min = 0.5 h

Substituting these values into the equation:

$average \space\ velocity = \frac{450 \space\ km }{ 0.5 \space\ h}$

⇒ $\bf 900 \space\ km/h$

8 0

2 years ago

How know that rocks formed from the seafloor sediments deposited in the Amadeus basin were softer than the arkose sandstone

svp [43]

The rocks formed from the seafloor sediments deposited in the Amadeus basin were softer than the Arkose sandstone because the Amadeus basin were made up of marine and non-marine sedimentary rocks which are softer compared to quarts which make up mostly the Arkose sandstone.

7 0

3 years ago

Read 2 more answers

An electric field of intensity 4.25 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.

Anestetic [448]

Answer:

Electric flux will be equal to $1041.25Nm^2/C$

Explanation:

We have given electric field $E=4.25KN/C=4.25\times 10^3N/C=4250N/C$

Sides of rectangle is given as 0.350 m wide and 0.700 m long

So length of rectangle l = 0.7 m and width w = 0.35 m

So area of rectangle $A=0.7\times 0.35=0.245m^2$

It is given that electric field is along the x axis

So angle between plane and electric filed $\Theta =0^{\circ}$

So electric flux will be equal to $\Phi =EAcos\Theta =4250\times 0.245\times cos0^{\circ}=1041.25Nm^2/C$

5 0

3 years ago