All categories

3 years ago

Which of the following shows resistors in a parallel circuit

Physics

2 answers:

Alexeev081 [22]3 years ago

7 0

The bottom drawing do

liubo4ka [24]3 years ago

5 0

Answer:

Circuit (b)

Explanation:

In parallel combination of resistors, the current flowing in each branch divides while the potential difference remains the same in entire circuit. The equivalent resistance is given by the following formula as :

$\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}$

While in series combination, the current remains the same while the volatge across each resistor is different. Their equivalent is given by:

$R_{eq}=R_1+R_2+R_3$

In the given figure, circuit (b) shows parallel combination of resistors. Also, the resistors are connected in two different paths in circuit (b).

You might be interested in

A star with a mass like the Sun which will soon die is observed to be surrounded by a large amount of dust and gas -- all materi

Dafna11 [192]

Answer: D. Infrared

Infrared is the best way to observe it.

5 0

3 years ago

PLEASE HURRYYYY!!! Explain how you read measurements in a graduated cylinder?

fredd [130]

Answer:

Reading a Graduated Cylinder

Place the graduated cylinder on a flat surface and view the height of the liquid in the cylinder with your eyes directly level with the liquid. The liquid will tend to curve downward. This curve is called the meniscus. Always read the measurement at the bottom of the meniscus.....

hope it helps....

5 0

1 year ago

Freight car A with a gross weight of 200,000 lbs is moving along the horizontal track in a switching yard at 4 mi/hr. Freight ca

zhenek [66]

Answer: a) 4.7 mi/hr. b) 86,500 lbs. mi²/Hr²

Explanation:

As in any collision, under the assumption that no external forces exist during the very small collision time, momentum must be conserved.

If the collision is fully inelastic, both masses continue coupled each other as a single mass, with a single speed.

So, we can write the following:

p₁ = p₂ ⇒m₁.v₁ + m₂.v₂ = (m₁ + m₂). vf

Replacing by the values, and solving for vf, we get:

vf = (200,000 lbs. 4 mi/hr + 100,000 lbs. 6 mi/hr) / 300,000 lbs = 4.7 mi/hr

If the track is horizontal, this means that thre is no change in gravitational potential energy, so any loss of energy must be kinetic energy.

Before the collision, the total kinetic energy of the system was the following:

K₁ = 1/2 (m₁.v₁² + m₂.v₂²) = 3,400,000 lbs. mi² / hr²

After the collision, total kinetic energy is as follows:

K₂ = 1/2 ((m₁ + m₂) vf²) = 3,313,500 lbs. mi²/hr²

So we have an Energy loss, equal to the difference between initial kinetic energy and final kinetic energy, as follows:

DE = K₁ - K₂ = 86,500 lbs. mi² / hr²

This loss is due to the impact, and is represented by the work done by friction forces (internal) during the impact.

8 0

3 years ago

Which two surfaces would have the highest coefficient of friction?

scoray [572]

1. sandpaper against wood.
2. rubber mat against the floor of the shower stall.

# High coefficient of friction describes the degree of interaction between two surfaces. . A higher coefficient of friction indicates that two surfaces in contact have a greater resistance.

5 0

3 years ago

Read 2 more answers

A man starts from rest and accelerates at 4.00 m/s2. If he covers a distance of 525 m, how long does he accelerate?

rosijanka [135]

Answer:

16.2 s

Explanation:

Given:

Δx = 525 m

v₀ = 0 m/s

a = 4.00 m/s²

Find: t

Δx = v₀ t + ½ at²

525 m = (0 m/s) t + ½ (4.00 m/s²) t²

t = 16.2 s

5 0

3 years ago