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
Delvig [45]
3 years ago
12

There is a fixed voltage across a resistor, and you measure a current of c1 A. If you replace the resistor with one that has twi

ce the resistance value, how much current will you measure? a) 0.2 A b) 0.5 A c) 0.8 A d) 1.1 A
Physics
1 answer:
prisoha [69]3 years ago
4 0

Answer:

Option B

Explanation:

Given

The current flowing through the circuit = 1 Ampere

As we know

I is inversely proportional to resistance.

I α 1/r

or I = k/r

If the resistor "r" is replaced by any resistor "R" with resistance = 2r, then the current will be

I = 1/2 of 1 ampere

I = 0.5 Ampere

Hence, option B is correct

You might be interested in
The loudness of a sound is determined by the __________, or height, of the sound wave.
balandron [24]

C.    amplitude....................


5 0
4 years ago
Read 2 more answers
One student did an experiment on the rock cycle.
Nonamiya [84]
First, when the student added the layers of wax over each other, this became a representation of sedimentary rocks.

Then the student folded his/her palm and squeezed the layers of wax. This means that the student applied heat and pressure on the wax (sedimentary rocks)

Referring to the diagram below which represents the rock cycle, we will find that applying heat and pressure on sedimentary rocks would convert these rocks into metamorphic rocks.

Based on the above, the best choice would be:
<span>d. Heat and pressure can change sedimentary rocks into metamorphic rocks.</span>

7 0
3 years ago
what is required to bring about a phase change 1.an increase or decrease in pressure 2.an increase or decrease in energy 3.an in
frozen [14]

Answer

Correct answers are 1.an increase or decrease in pressure 2.an increase or decrease in energy

Explanation

All existing matter can undergo phase change it means they may transform from one state to another. phase change of a matter  may occur due to change in energy and change in pressures.

for example there is an ice cube which is a solid and if  we want to change it phase into liquid water for that purpose we have to supply some energy to ice cube it means we have to give some heat to ice cube. After supplying heat energy to the ice it will turn into water it means there is phase change from solid to liquid due to supplying the heat. Similarly we can change the liquid water into solid ice cube by taking heat energy(reducing temperature) from the liquid water  .

In some cases the matter doesn't want to undergo phase transformation. For example, oxygen will solidify at -361.8 degrees Fahrenheit at standard pressure.But , it can change to solid state at warmer temperatures when the pressure is increased.


8 0
3 years ago
Read 2 more answers
a forklift exerts an upward force of 2.00 * 10^3 n on abox as it koves the box 5.00 m forward how much work does the forklift do
grin007 [14]
The forklift does no work on the box at all. And work doesn't have a direction.
5 0
3 years ago
A book is to be produced with pages of thickness 0.125mm.If the book is to be exactly 1cm thick what is the maximum number of pa
miskamm [114]

Answer:

1cm=10mm

10cm/0.125mm

80pages

5 0
3 years ago
Other questions:
  • A bear spies some honey and takes off from rest, accelerating at a rate of 2.0 m/s^2. If the honey is 16m away, how fast will hi
    15·1 answer
  • Consider a transition at 5000 Å with a width of 1 Å and a cavity 2 cm3 in volume. How many electromagnetic modes exist in this f
    12·1 answer
  • Why does a star grow larger after it exhausts its core hydrogen?
    14·1 answer
  • Which of the following frequencies falls in the range of RF waves used by commercial radio broadcasting stations?
    10·2 answers
  • Four seismometers stations are the minimum needed to calculate the epicenter of an earthquake.
    5·1 answer
  • What option lists the types of electromagnetic waves in order of increasing wavelength?
    8·1 answer
  • How mmany bonds should be drawn in the lewis- dot structure for methan, CH4
    12·1 answer
  • create a poem that incorporates those ten words. Feel free to make it as silly as you like! MINIMUM of 6 lines with a MINIMUM of
    11·1 answer
  • A rather devious student has built himself a slingshot, with the idea of firing
    5·1 answer
  • How do you work out Potential Difference??? <br> Please can you make it simple :) <br> Thanks.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!