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3 years ago

On a box are the words 12 Volt : 50 mA What is the resistor in Kilo-Ohm?

Physics

1 answer:

katrin [286]3 years ago

6 0

Answer:

R = 0.24 kilo-ohm

Explanation:

Given that,

Voltage, V = 12 volt

Current, I = 50 mA = 0.05 A

We need to find the resistance of the resistor. We can find it using Ohm's law. So,

V = IR

$R=\dfrac{V}{I}\\\\R=\dfrac{12}{0.05}\\\\R=240\ \Omega$

R = 0.24 kohm

So, the value of resistance is 0.24 kilo-ohm.

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I would love to stretch a wire from our house to the Shop so I can 'call' my husband in for meals. The wire could be tightened t

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Note: I'm not sure what do you mean by "weight 0.05 kg/L". I assume it means the mass per unit of length, so it should be "0.05 kg/m".

Solution:
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The wavelength of the standing wave is instead twice the length of the string:
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So the speed of the wave is
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And the time the pulse takes to reach the shop is the distance covered divided by the speed:
$t= \frac{L}{v}= \frac{24 m}{69.1 m/s}=0.35 s$

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