A 9.0 volt battery is connected to four resistors in a parallel circuit. The resistors have 7.0 Ω, 5.0 Ω, 4.0 Ω, and 2.0 Ω respectively. What is the total current in the circuit?

Answers

Answer 1

Answer: series,effective resistance =R₁+R₂+R₃...
parallel,effective resistance 1/R=1/R₁ +1/R₂ +1/R₃...

Here,effective resistance 1/R =1/7 +1/5+ 1/4+1/2
=1.092
R = 1/1.092 =0.915Ω
voltage V=9 V
current I=V/R
I=9 / 0.915
=9.83 A

Answer 2

Answer: parallel resistance = $(1)/(7)$ + $(1)/(5)$ + $(1)/(4)$ + $(1)/(2)$
= $(140)/(153)$

now , V= 9V
V = IR
I = $(V)/(R)$
I = $(9)/(140)$ x 153
I = 9.835714 A

Related Questions

Think about what subsequently happens to the ketchup, which is initially at rest, and use newton's first law to explain why this technique is so successful.
because the snow suddenly gets too slushy, you decide to carry your 100-newton sled the rest of the way home. How much workdo you you do when you pick up your sled, lifting it 0.5meter upward? How much work do you do to carry the sled if your house is 800 meters away?
Who was Albert Einstein?
Define density and give its SI unit
How do you call a number of waves that pass a given point in a specific time, commonly one second.

The refractive index of water is greater than that of air but is less than that of glass or a diamond. Under which condition can there be total internal reflection in water?

Answers

For total internal reflection to happen, light must travel from a medium object of higher density to a medium of lower density. To make sure that total internal reflection will happen in water, then the light must originate from glass or diamond before entering water.

Answer:

C.When light travels from water to air

Explanation:

Plato user

Which of these is not a conservative force and does not have a form of potential energy connected with it?

Answers

It sounds a if there should be some types of forses to choose... Anyway, I have got what you need and the forse which is not a conservative force and does not have a form of potential energy connected with it is friction.

For which of these scenarios is total internal reflection possible?

Answers

TIR is possible whenever light is travelling from a more optically dense medium to a less optically dense medium. You didnt provide any scenarios but just look up refractive indexes of the mediums the light is travelling through and if it is travelling from a more dense to a less dense, TIR is possible

Which statement best describes the difference between moving and fixed position pulleys-Moving pulleys are attached to the object and are stationary. Fixed-position pulleys are connected to a fixed point and do not move

-moving pulleys are attached to the object and move with the object. Fixed-position pulleys are connected to a fixed point and do not move

-moving pulleys are easier to use than fixed position pulleys

-moving pulleys have more force than fixed-position pulleys

Answers

The answer is moving pulleys are attached to the object and move with the object. Fixed-position pulleys are connected to a fixed point and do not move

When electrons are removed from the outermost shell of a calcium atom, the atom becomes

Answers

A cation has a smaller radius than the atom.

a cation
Cations are positive ions that have lost an electron

fastest humans can reach speeds of about 11 m/s. part a in order to increase his gravitational potential energy by an amount equal to his kinetic energy at full speed, how high would such a sprinter need to climb? express your answer to two significant figures and include the appropriate units.