All categories

3 years ago

How does increasing the resistance affect the current

Physics

2 answers:

belka [17]3 years ago

6 0

Voltage is increased, the current will increase provide the resistance of the circuit does not change

zepelin [54]3 years ago

3 0

Ohm's law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R). Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change.

You might be interested in

Unpolarized light whose intensity is 1.46 W/m2 is incident on the polarizer in the drawing. (a) What is the intensity of the lig

Serhud [2]

Answer:

0.73 W/m²

0.2522 W/m²

Explanation:

$I_0$ = Unpolarized light = 1.46 W/m²

$\theta$ = Analyzer angle = 54°

Light through first filter

$I_1=\frac{I_0}{2}\\\Rightarrow I_1=\frac{1.46}{2}\\\Rightarrow I_1=0.73\ W/m^2$

The intensity of the light leaving the polarizer is 0.73 W/m²

After passing through analyzer

$I=I_1cos^2\theta\\\Rightarrow I=0.73\times cos^2(54)\\\Rightarrow I=0.2522\ W/m^2$

The intensity of the light that reaches the photocell is 0.2522 W/m²

6 0

3 years ago

The length of the adult mosquito is typically between 3.0 mm and 6.0 mm. The smallest known mosquitoes are around 2.5 mm, and th

FrozenT [24]

0.74in

Explanation:

Given parameters:

length range of adult mosquito = 3.0 - 6.0mm

Smallest mosquito = 2.5mm

Largest mosquito = 19mm

Average mass range = 3.0 - 5.0mg

Unknown:

Length of largest known mosquito in inches = ?

Solution;

The length is the longest dimension. It is how long a body is.

The problem here is converting from mm to inches;

The length of the longest mosquito which is the largest is 19mm

19mm to inches;

1mm = 0.039inches

19mm = 19mm x $\frac{0.039in}{1mm}$ = 0.74in

learn more:

Scale brainly.com/question/570757

#learnwithBrainly

4 0

3 years ago

The equation to calculate density is D = m/v. For a liquid substance, which item increases as heat is applied?

777dan777 [17]

Answer:

See below

Explanation:

Things generally expand when heated ....so <u>volume increases</u> while mass remains the same .....this will cause the value of density to decrease

6 0

2 years ago

Indicate whether each of the following statements is true or false. In a coal-fired power plant, chemical energy is first conver

denis23 [38]

Answer:

1. In a coal-fired power plant, chemical energy is first converted to thermal energy. TRUE.

The chemical energy in the coal is converted to thermal energy when the coal is burnt to produce steam.

2. In a coal-fired power plant, approximately 2/5 of original energy in the coal is lost to heat. FALSE.

Approximately 3/5 of the original energy is lost not 2/5 so this statement is false.

3. The molecules in cold air move faster than in hot air. FALSE.

Molecules with more heat move faster than molecules with less. Molecules in cold air therefore, will move slower than molecules in hot air.

6 0

3 years ago

A horizontal board of negligible thickness and area 2.0 m2 hangs from a spring scale that reads 80 N when a 4.0 m/s wind moves b

ki77a [65]

Answer:

Scale reading for no wind $W'=60N$

Explanation:

From the question we are told that

Area $A= 2.0 m^2$

Weight of board $W=80$

Velocity $V=4.0m/s$

Density of air $\delta= 1.25 kg/m3 .$

Generally the equation for pressure difference by Bernoulli equation is mathematically given by

$dP=\frac{1}{2}pv^2$

$dP=10Pa$

Generally force acting on the board by air is mathematically given by

$F=\triangle PA$

$F=(10)2=>20N$

Therefore

Scale reading for no wind W'

$W'=W-F\\W'=80-20$

$W'=60N$

Scale reading for no wind W'=60N

6 0

3 years ago