Physics, 13.10.2019 12:30 jessixa897192

Which of the following will increase if the voltage in a circuit is increased? check all that apply

a.) current

b.) resistance

c.) heat produced by the circuit

d.) magnetic force

Answers: 2

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Answer from: gabe2111

If the voltage in a circuit is increased then the current, heat and magnetic force will be increase.

Option (a),(c) and (d) is correct.

Explanation:

According to Ohm's law

Current :

The current is directly proportional to the voltage .

$I\propto V$

So, the current will increases then the voltage will be increase.

Resistance :

The resistance does not depend on the voltage because the resistance depends on the length of the wire, radius and the resistivity of the wire.

$R=\dfrac{\rho l}{\pi r^2}$

Heat :

Heat depends on the power and power depends on the voltage and current.

$P = \dfrac{V^2}{R}$

$P= I^2\times R$

So, when the voltage will increase in the circuit then the heat produced by the circuit would also increase.

Magnetic force

When the current flows in the wire then magnetic field is produced around it. If the current increases then magnetic field increases. This would increase the magnetic force associated with it.

Hence, If the voltage in a circuit is increased then the current, heat and magnetic force will be increase.

Answer from: Quest

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic = - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

Answer from: Quest

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

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Which of the following will increase if the voltage in a circuit is increased? check all that apply...

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