A circuit contains a 12 volt battery and two 3 ohm bulbs in series. Calculate the current

Answers

Answer 1

Answer:
If there are two bulbs in series, and each bulb has

resistance = 3 ohms,

then their total resistance in series is 6 ohms.

When the series pair of bulbs is connected across the terminals
of the battery, the current through the circuit is

Current = (voltage) / (resistance)

= (12 volts) / (6 ohms) = 2 amperes

Related Questions

What is the polarity of each of the earths magnetic poles ? Explain you answer
Average amount of time wind machines operate
How do i find displacement on a position time graph ?
A baseball of mass 250g, pitched with a speed of 40m/s is caught by the catcher, whose glove moves backward 0.25m while stopping the ball. What was the kinetic energy of the ball before it was caught?
The SI base unit for mass is the _____. A. kilogram B. newton C. gram D. slug E. pound

Three quarterbacks challenged each other to a throwing competition. They want to see who can throw the ball the furthest. What SI unit would be most appropriate to measure the competition? Question 1 options: Celsius Gram Meter Liter

Answers

Answer:

Meter

Explanation:

The competition between the three quarterbacks is with respect to how far the ball would be thrown by each person, which is the distance covered by the ball. The thrown ball is an example of projectile, which would move over a certain distance.

With respect to the measure to be used in the competition, the appropriate SI unit is meter. This is the measure of length or distance covered.

The basic unit for mass is thea. gram.
c. cubic meter.
b. metric ton.
d. meter.

Answers

Answer: The correct answer is option a.

Explanation:

Basic unit to measure mass is defined as the unit which is commonly used to measure the mass of an object.

From the given options,

Option a: Grams is a unit which is used to measure mass and it is the commonly used unit.

Option b: Cubic meter is the unit which is used to measure the volume of an object.

Option c: Metric ton is a unit which is used to measure the mass of an object but this unit is not commonly used. hence, this is not basic unit to measure mass.

Option d: Meter is the unit which is used to measure length.

From the above information, the correct answer is option a.

gram according to the metric system

A beam of white light goes from air into water at an incident angle of 84.0∘. At what angles are the red 660 nm and violet 410 nm parts of the light refracted? Red light in water has an index of refraction equal to 1.331 and that of violet light is 1.342.

Answers

The angle at which the light got refracted is known as the angle of refraction. The angle of refraction of red light is 48.3°. While the angle of refraction of Violet light is 47.8°.

What is snell law?

"The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given color and for a given set of media,

According to Snell's law. The formula for Snell's law is

$\rm {n= (sini)/(sinr) }$

i is the incidence angle

r is the refractionangle.

n is the refractive index of the medium

For red light,

$\rm {n= (sini)/(sinr) }\n\n\rm {1.331= (sin84^0)/(sinr)\n$

$\rm{sinr=(sin84^0)/(1.331)}$

$\rm r = sin^(-1)(0.7472)$

$\rm r = 48.3^0$ $\rm r = 47.8^0$

Hence the angle of refraction of red light is 48.3

For violet light,

$\rm {n= (sini)/(sinr) }\n\n\rm {1.342= (sin84^0)/(sinr)\n$

$\rm{sinr=(sin84^0)/(1.342)}$

$r = sin^(-1)(0.7411)$

Hence the angle of refraction of Violet light is 47.8°.

To learn more about snell's law refer to the link;

brainly.com/question/10112549

Answer:

Red light has an angle of refraction of 48.3°.

Violet light has an angle of refraction of 47.8°.

Explanation:

From Snell's law of refraction, the refractive index is the ratio of the sine of the angle of incidence to the sine of the angle of refraction.

$n=(\sin i)/(\sin r)$

For red light in water,

$1.331=(\sin 84)/(\sin r)$

$\sin r=(\sin 84)/(1.331)=0.7472$

$r=\sin^(-1)0.7472=48.3}$

For violet light in water,

$1.342=(\sin 84)/(\sin r)$

$\sin r=(\sin 84)/(1.342)=0.7411$

$r=\sin^(-1)0.7411=47.8}$

Sean climbs a tower that is 71.3 m high to make a jump with a parachute. The mass of Sean plus the parachute is 81.4 kg. If U = 0 at ground level, what is the potential energy of Sean and the parachute at the top of the tower?

Answers

Answer:

U = 56877.4 J

Explanation:

The potential energy of a body is that which it possesses because it is located at a certain height above the surface of the earth and can be calculated using the following formula:

U = mgh Formula (1)

Where:

U is the potential energy in Joules (J)

m is the mass of the body in kilograms (kg)

g is the acceleration due to gravity (m/s²)

h is the height at which the body is found from the surface of the earth in meters (m)

Data

m= 81.4 kg

g= 9.8 m/s²

h = 71.3 m

Potential energy of Sean and the parachute at the top of the tower

We replace data in the formula (1)

U = m*g*h

U = (81.4 kg)*(9.8 m/s²)*(71.3 m)

U = 56877.4 N*m

U = 56877.4 J

Ben is exercising his pony on a large, oval track. The pony is trotting at a constant speed of 10 m/s around the track. Which statement can be made about the pony's acceleration? A) The pony is decelerating. B) The rate of acceleration varies. C) The pony is accelerating around the track. D) The pony is not accelerating around the track.

Answers

Answer: Hello mate!

The velocity of the pony is constant in magnitude, so you may think that the pony is not acelerating, but you need to notice that the track has an ocal shape.

This means that the direction of the velocity is changing all the times, this mean that there is an "acceleration" changing the direction of the velocity, this is called centripetal acceleration, then the pony is accelerating around the track.

The right answer is C.

The answer is c i took the test

What is the equation for calculating electric power?

Answers

Power consumed by an electric device, or dissipated as heat, is

Power = (voltage between the ends of the device) x (current through it)

The equation for calculating electric power is given by the folloowing equation : -

P = VI

Where P stands for power, V for potential difference and I for current.

Other Questions

Several teenagers swim toward a rectangular, wooden raft that is 2.00 m wide and 2.50 m long. If the raft is 9.80 cm thick, how many 75.0 kg teenage boys can stand on top of the raft without the raft becoming submerged? Assume the wood density is 650 kg/m3.

Two of the three tuning forks have known frequencies. When a 510 Hz. fork and the unknown fork are struck together, four beats per second are heard. When a 505 Hz. fork is struck with the unknown fork, beats are produced that are too numerous to count accurately. What is the frequency of the unknown fork?

Which region of the electromagnetic spectrum has the longest wavelength?

Define circular motion and give some examples.