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SVEN [57.7K]
3 years ago
15

What would be the relative difference between the currents required by a 60W lightbulb and a

Physics
1 answer:
anygoal [31]3 years ago
4 0

The current required by the 60W bulb is three-fifths that required by the 110W bulb

<h3>Electrical Power</h3>
  • Electrical power is defined as the amount of electrical work done per second
  • Power = electrical work done in joules/time taken in seconds

The formula for calculating power is as follows:

  • P = IV = V²/R = I²R

Assuming the voltage across the light bulbs is the same

From the formula, P = IV;

I = P/V

For the 60 W bulb

I₁ = 60/V

For the 100W bulb

I₂ = 100/V

Taking ratios of the currents:

I₁/I₂ = {60/V}/{`100/V}

I₁/I₂ = 3/5

Therefore, the current required by the 60W bulb is three-fifths that required by the 110W bulb

Learn more about electrical power and currents at: brainly.com/question/12822995

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A car travels a distance of 200m in 20s. The engine of the car provides a driving force of 1000N. What is the power output of th
sp2606 [1]

Answer:

10000W

Explanation:

work=1000*200=200000

then

P=work/time=200000/20=10000W

6 0
3 years ago
Which describes how chemical changes are different from physical changes?
lions [1.4K]

Answer:

B. Chemical changes involve the formation of a new substance.

Explanation:

They can both release energy, both can be measured, and chemical changes can be caused by oxygen, so I believe it would be B.

6 0
3 years ago
A potential difference of 1.0 V was developed across a 10cm long thin metal bar as it moves through a magnetic field at 10m/s. T
Kipish [7]
The correct option is: Option (D) 1.0T Out of the page.

Explanation:

The formula for the induced emf in the wire  = ε = Blv
ε = Potential difference = 1.0 V
v = speed of the wire = 10 m/s
l = length of the wire = 10cm  = 0.1 m
B = magnetic field = ?

Plug in the values:
B = ε/lv = 1/(0.1*10) = 1 T (And according to the right hand rule it should be out of the page.)


8 0
3 years ago
Can a apple fall from a tree and not break open?
Feliz [49]

Well as you've seen before most likely, an apple can fall right off a tree, and stay perfectly fine. its all dependent on the variables. What angle is the apple falling at? Whats the speed, height, even the size of the apple? We must take into aware anything can happen, but its all behind the variables.

Brainliest if helpful

P.S Fact Check with the second person who just answered

6 0
2 years ago
Read 2 more answers
A bag of groceries has a weight of 44 newtons. Find its approximate weight in kilograms.
Artist 52 [7]
You cannot convert newtons to kilograms, or pounds to kilograms,
or kilograms to pounds or newtons.

Newtons and pounds are units of FORCE.  Kilogram is a unit of MASS.


If an object weighs 44 newtons on Mars,
then its mass is about 13.5 kilograms

If an object weighs 44 newtons on the Moon,
then its mass is about 27.2 kilograms.

If an object weighs 44 newtons on Earth,
then its mass is about 4.5 kilograms.
4 0
3 years ago
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