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
juin [17]
3 years ago
6

A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how

many turns are in the secondary? A. 8 B. 690 C. 72 D. 1,653
Physics
1 answer:
Nata [24]3 years ago
4 0

Answer:

C. 72

Explanation:

Transformer: A transformer is an electromagnetic device that uses the property of mutual inductance to change the voltage of alternating supply.

In a ideal transformer,

Vs/Vp = Ns/Np ............................................. Equation 1

Where Vp = primary voltage, Vs = secondary voltage, Ns = Secondary turn, Np = primary turn.

Making Ns the subject of the equation,

Ns =(Vs/Vp)Np .......................................... Equation 2

Given: Vs = 24 V, Vp = 115 V, Np = 345.

Substitute into equation 2

Ns = (24/115)345

Ns = 72 turns.

Thus the number of turns in the secondary = 72 turns.

The right option is C. 72

You might be interested in
The figure shows the original channel of a river, as well as its current channel. Which of the following forces MOST LIKELY chan
mash [69]

Answer: bbbb

Explanation:

3 0
3 years ago
(P.E) Physical Activity and Fitness.......,,,
Greeley [361]
Unscrambling

1. resting heart rate

2. overload

3. workout

4. specificity

5. cool-down

6. progression

7. warm-up

8. the last one can only be instance, but there was a typo on the paper.
4 0
3 years ago
Which statement best describes the law of conservation of energy?
shtirl [24]

Answer:

b!!!! did it help? :)))

7 0
3 years ago
Read 2 more answers
Imagine that two balls, a basketball and a much larger exercise ball, are dropped from a parking garage. If both the mass and ra
pashok25 [27]

Here if we assume that there is no air friction on both balls then we can say

F = mg

now the acceleration is given as

F = ma = mg

a = g

so here both the balls will have same acceleration irrespective of size and mass

so we can say that to find out the time of fall of ball we can use

y = \frac{1}{2}gt^2

t = \sqrt{\frac{2y}{g}}

now from above equation we can say that time taken to hit the ground will be same for both balls and it is irrespective of its mass and size

3 0
3 years ago
Can someone please help with this. "A ball is thrown vertically upward with a speed of 26.6 m/s. How high does it rise? The acce
lubasha [3.4K]

v^2=u^2+2as

0=26.6^2-2x9.8xs

-26.6^2/-2x9.8=s

calculator

8 0
3 years ago
Other questions:
  • Two manned satellites approach one another at a relative velocity of v = 0.150 m/s, intending to dock. The first has a mass of m
    6·2 answers
  • If the runner completes exactly one lap what is her average speed? her average velocity? Explain your answer.
    14·1 answer
  • What are real images? Are the upright or inverted?
    11·1 answer
  • Molecules that contain two polar bonds are _____.
    14·2 answers
  • Eventually, the process approaches a steady state. In that steady state, the charge of the capacitor is not changing. What is th
    13·1 answer
  • How are Neptune and Uranus allke?
    8·2 answers
  • Suppose you are observing the interference pattern formed by a Michelson interferometer in a laboratory and a joking colleague h
    11·1 answer
  • A bat hits a 0.150 kg baseball for
    11·1 answer
  • What is the unit of work in SI system?
    10·2 answers
  • Why is the importance and need of environmental science increasing in today world ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!