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3 years ago

Answer these questions plz

Physics

1 answer:

lozanna [386]3 years ago

8 0

1. The property of a conductor by virtue of which it posses the flow of electric current through it is called resistance.

2. The resistance of a conductor depends on the cross sectional area of the conductor and it's resistivity.

3.This id due to the fact that the resistance of a wire is inversely proportional to the square of its diameter.

4.Due to at high temperatures , the alloy donot oxidize. Alloy doesn't melt readily and get deformed.

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Which has a higher acceleration a 10-kg object acted upon with a net force of 20 N or an 18-kg object acted on by a net force of

Ulleksa [173]

First object:
m=10 kg
F=20 N

F=ma, then:
a=F/m
a=20/10=2 m/s²

Second object:
m=18 kg
F=30 N

a=F/m
a=30/18=1.6 m/s²

The first object has a higher acceleration.

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4 years ago

Calculate the magnetic field at 2m from a straight wire carrying a current of 5 A. (K = 2 x 10 ^-7)

blagie [28]

Answer:

$B=5\times 10^{-7}\ T$

Explanation:

Given that,

Current in a wire, I = 5 A

We need to find the magnetic field at 2m from a straight wire carrying a current of 5 A.

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$B=\dfrac{\mu_0I}{2\pi r}\\\\B=\dfrac{4\pi \times 10^{-7}\times 5}{2\pi \times 2}\\\\B=5\times 10^{-7}\ T$

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Answer these questions plz​

Answer these questions plz