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3 years ago

Is directly proportional to the length and resistivity of the conductor.

Physics

2 answers:

aliya0001 [1]3 years ago

8 0

Answer:

B) resistance

Explanation:

the resistance of a wire is proportional to its length, and inversely proportional to its cross-sectional area.

Andrews [41]3 years ago

4 0

The resistance of conductor is directly proportional to length and resistivity.

Answer: Option B

<u>Explanation: </u>

Resistance is present in an electrical object or rather introduced to counter check the flow of the current. It is similar to the mechanical friction in the conceptualization of its existence and effect.

It is directly proportional to the length of the electric circuit. It is being measured and noted in ohm. The formula for resistance is –

$R=\rho \frac{l}{A}$

Where,

R - the Resistance of the wire,

$\rho$ - the resistivity of the wire

L - The length of the wire

A - the area of cross section of the wire

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Answer:A.

Increase your motivation to continue doing it

Explanation:

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3 years ago

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A 2 kg ball is dropped above the surface of Planet X. If the gravitational field strength at the surface of Planet X is 5 N/kg,

Trava [24]

Given data:

* The mass of the ball is 2 kg.

* The gravitational field strength at the surface of planet X is 5 N/kg.

Solution:

The weight of the ball on the planet X is,

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$\begin{gathered} W=2\times5 \\ W=10\text{ N} \end{gathered}$

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1 year ago

1. A point scored when the ball passes between the goal posts is considered a

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Answer:

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Explanation:

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4 0

3 years ago

8. Semiconductors

Andreas93 [3]

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5 0

3 years ago

There is a naturally occurring vertical electric field near the Earth’s surface that points toward the ground. In fair weather c

trasher [3.6K]

Answer:

$\frac{F}{W} = 9.37 \times 10^{-4}$

Explanation:

Radius of the pollen is given as

$r = 12.0 \mu m$

Volume of the pollen is given as

$V = \frac{4}{3}\pi r^3$

$V = \frac{4}{3}\pi (12\mu m)^3$

$V = 7.24 \times 10^{-15} m^3$

mass of the pollen is given as

$m = \rho V$

$m = 7.24 \times 10^{-12}$

so weight of the pollen is given as

$W = mg$

$W = (7.24 \times 10^{-12})(9.81)$

$W = 7.1 \times 10^{-11}$

Now electric force on the pollen is given

$F = qE$

$F = (-0.700\times 10^{-15})(95)$

$F = 6.65 \times 10^{-14} N$

now ratio of electric force and weight is given as

$\frac{F}{W} = \frac{6.65 \times 10^{-14}}{7.1 \times 10^{-11}}$

$\frac{F}{W} = 9.37 \times 10^{-4}$

7 0

3 years ago