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
Marysya12 [62]
3 years ago
7

A small electronic device is rated at 0.16 W when connected to 115 V. What is the resistance of this device?

Physics
2 answers:
Ierofanga [76]3 years ago
8 0

Answer:

150156.25 Ω

Explanation:

Resistance: This can be defined as the opposition to the flow of electric current in a circuit. The S.I unit of resistance is Ohm's (Ω)

The expression for resistance is given as

P = V²/R................ equation 1

Where P = power, V = Voltage, R = Resistance.

Making R the subject of the equation,

R = V²/P.................. Equation 2

Given: V = 115 V , P = 0.16 W.

Substitute into equation 2

R = 155²/0.16

R = 150156.25 Ω

Hence,

The resistance = 150156.25 Ω

murzikaleks [220]3 years ago
8 0

Answer:

82.656 KΩ

Explanation:

The power rating (P) in a device is related to its voltage (V) and its resistance (R) as follows;

P = \frac{V^{2} }{R}    ------------------------(i)

Where, according to the question;

P = 0.16W

V = 115V

R is unknown

<em>Substitute the values of P and V into the equation (i);</em>

=> P = \frac{V^{2} }{R}

=> 0.16 = 115^{2} / R

<em>Make R subject of the formula</em>

=> R = \frac{115^{2} }{0.16}

=> R = 13225 / 0.16

=> R = 82656.25Ω

=> R = 82.656KΩ

<em>The resistance of the device is R = 82.656KΩ</em>

<em></em>

You might be interested in
What current is produced with a voltage of 6.0 V and a resistance of 445 ohms?17.4 mA
san4es73 [151]

Answer:

i Believe its 17.4 mA

4 0
2 years ago
What is the difference between diatomic and poly-atomic molecules? Site some examples.
Olegator [25]
Their difference lies in the prefix used before each root word, atom. The diatomic molecules are composed only of 2 atoms such as that of the diatomic elements: H2, O2, N2, Cl2, etc. On the other hand, polyatomic molecules are made up of three or mole atoms such as NH4+, H2SO4, etc. 
8 0
3 years ago
A bowler who always left the same three pins standing could be considered a(n) ____ bowler.
RideAnS [48]
A bowler who always left the same 3 pins standing could be considered a C. Precise bowler as from bowling countless number of times he has observed the same amount of pins knocked down each time.
4 0
3 years ago
Your job is to lift 30 kgkg crates a vertical distance of 0.90 mm from the ground onto the bed of a truck. For related problem-s
Gekata [30.6K]

Answer:

The number of crates is 84580.

Explanation:

mass, m = 30 kg

height, h = 0.9 mm  

Power, P = 0.5 hp = 0.5 x 746 W = 373 W

time, t = 1 minute = 60 s

Let the number of crates is n.

Power is given by the rate of doing work.

P = \frac{n m gh}{t}\\\373 =\frac{n\times 30\times9.8\times 0.9\times 10^{-3}}{60}\\\\n =84580

7 0
3 years ago
An electric motor moves a chain that pulls the roller coaster car 180 meters to the top of the first hill. The chain exerts a fo
MrRa [10]
The energy added here is potential energy since it is moving upward 180 meters in a gravitational field.  This is then turned into KE when it rolls down.  2524N x 180m = 454,320J
3 0
3 years ago
Read 2 more answers
Other questions:
  • Jarin drank a lot of water before going to the doctor. What best describes what would happen to his blood pressure?
    7·2 answers
  • What is the primary mechanical advantage of a screw?
    14·2 answers
  • What is the dead load of a bridge
    15·1 answer
  • Ways to stop pollution
    7·1 answer
  • Which common characteristic of planets do Saturn and Earth share?
    11·2 answers
  • If it requires 8.0 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be re
    14·1 answer
  • Craig Terrill has many _________. Press enter to interact with the item, and press tab button or down arrow until reaching the S
    15·1 answer
  • What does fitness means to you
    11·2 answers
  • Can anyone please tell me the properties of image formed in a spherical mirror?
    7·2 answers
  • I need help!!! :::///
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!