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
lozanna [386]
3 years ago
14

The potential difference across a resistor in a particular electric circuit is 420 V. The current through the resistor is 19.0 A

. What is its resistance (in Ω)?
Physics
1 answer:
damaskus [11]3 years ago
7 0

Answer: 22.11 ohms

Explanation:

Potential difference(v)=420V

Current(I)=19.0 amp

Resistance(r)=?

r=v/I

r=420/19.0

r=22.11 ohms

You might be interested in
The plane of a5cm*8cm rectangular loop of wire is parallel to a 0.19T magnetic field the loop carries a current of 6.2 A. What t
Sedaia [141]

Answer:

Torque; τ = 4.712 × 10^(-3) J

Magnetic moment; M = 0.0248 J/T

Explanation:

Torque is gotten from the formula;

τ = BIA

Where;

B is magnetic field

I is current

A is area

We are given;

B = 0.19T

I = 6.2A

Rectangle dimensions = 5cm by 8cm = 0.05m by 0.08m

Thus;

Area; A = 0.05m × 0.08m = 0.004 m²

Thus;

τ = 0.19 × 6.2 × 0.004

τ = 4.712 × 10^(-3) J

Formula for the magnetic moment is given by;

M = IA

M = 6.2 × 0.004

M = 0.0248 J/T

5 0
3 years ago
Charlie pulls horizontally to the right on a wagon with a force of 37.2 N. Sara pulls horizontally to the left with a force of 2
Sidana [21]

Answer:

The work done on the wagon is 37 joules.

Explanation:

Given that,

The force applied by Charlie to the right, F = 37.2 N

The force applied by Sara to the left, F' = 22.4 N

We need to find the work done on the wagon after it has moved 2.50 meters to the right. The net force acting on the wagon is :

F_n=F-F'

F_n=37.2-22.4

F_n=14.8\ N

Work done on the wagon is given by the product of net force and displacement. It is given by :

W=F_n\times d

W=14.8\ N\times 2.5\ m

W = 37 Joules

So, the work done on the wagon is 37 joules. Hence, this is the required solution.

7 0
3 years ago
Read 2 more answers
Which of the following is NOT a characteristic of noble gases?
Rudik [331]
Solid at room temperature
8 0
3 years ago
Read 2 more answers
Question 4 (2 points)
Igoryamba

The answer is a) Teres Major Muscle

7 0
2 years ago
Read 2 more answers
The combination of all of the forces acting on an object is called the
Veronika [31]
The answer is Net force
6 0
3 years ago
Other questions:
  • As a result of the violent revolts in france in july 1830
    8·1 answer
  • PLZZ ANSWER THE QUESTION ​
    6·1 answer
  • What are the benefits and drawbacks of using renewable energy sources to generate electricity?
    11·1 answer
  • A population has a birthrate of 10/1000 , a death rate of 9/1000, an immigration rate of 3/1000, and an emigration rate of 7/100
    5·1 answer
  • Which value is equivalent to 178 centimeters?
    11·1 answer
  • Snowflakes begin to form when water in the atmosphere freezes it causes the water molecules to bond into a hexagonal shape. Is t
    9·1 answer
  • How much kinetic energy does an 80 kg man have while running at 3 m/s?
    13·1 answer
  • A girl runs at a speed of 3.9 m/s off a high dive and hit the water 1.8 s later.
    9·1 answer
  • A wave on a string is observed to have a frequency of 3 Hertz. Its wavelength is 6 centimeters.
    14·1 answer
  • A 5,000 kg truck moving at 8 m/s has the same momentum as a 2,500 kg car. What is the velocity of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!