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puteri [66]
3 years ago
9

A wire with a resistance of 20 Ω is connected to a 12-V battery. What is the current flowing through the wire?

Physics
2 answers:
erma4kov [3.2K]3 years ago
8 0
Current is 0.6 Amps i think
Semenov [28]3 years ago
3 0

Answer : Current flowing through the wire is 0.6 A

Explanation :

Given that,

Resistance of the wire, R=20\ \Omega

Voltage, V=12\ V

Using Ohm's law :

V=IR

I=\dfrac{V}{R}

I=\dfrac{12\ V}{20\ \Omega}

I=0.6\ A

Hence, the current flowing through the wire is 0.6 A

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A physicist makes a cup of instant coffee and notices that, as the coffee cools, its level drops 3.00 mm in the glass cup. Show
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Answer:

change in height  is 1.664 mm

Explanation:

Given data

drops = 3.00 mm

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decrease  =  350 cm^3

temperature = 95°C to 44.0°C

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the decrease in millimeters in level

solution

we  will calculate here change in volume so we can find how much level is decrease

change in volume = β v change in temp   ...............1

here change in volume = area× height

so = \pi /4 × d² h

so we can say change in volume =  \pi /4 × d² × change in height   .......2

so from equation 1 and 2  we calculate change in height

( β(w) -β(g) )× v× change in temp = \pi /4 × d² × change in height

change in height = 4 × ( β(w) -β(g) ) v× change in temp / \pi /4 × d²

put all value here

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5 0
3 years ago
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Answer:

Hello There!!

Explanation:

The answer is A. electromagnetic.

hope this helps,have a great day!!

~Pinky~

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