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blsea [12.9K]
3 years ago
15

The power in an electrical circuit is given by the equation P = I2R, where I is the current flowing through the circuit and R is

the resistance of the circuit. i. What is the power in a circuit that has a current of 12 A and a resistance of 100 Ω? (Note: 1 A2·Ω = 1 W) ii. What is the current in a circuit that has a power of 200 W and a resistance of 150 Ω?
Physics
1 answer:
kiruha [24]3 years ago
5 0

Answer:

Explanation: Here we have given a direct equation . There for no need to worry .

P = I²×R

P = (12)² ×100

P = 14400W = 14.4 kW

For second one

P = I² ×R

200 = I²×150

I = √200/150

I = 1.15 A

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Answer:

+7.0 m/s

Explanation:

Let's take rightward as positive direction.

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We can use the following equation:

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In classical physics, consider a 2 kg block hanging on a spring with a spring constant of 50 N/m. Ignore air resistance. The blo
RUDIKE [14]

Answer:

v = 0

Explanation:

This problem can be solved by taking into account:

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T = \sqrt{\frac{m}{k} }     ( 1 )

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and by reeplacing it in ( 2 ):

v = \frac{2\pi }{0.2s}(14cm)sin(\frac{2\pi }{0.2s}(0.9s)) = 140\pi  sin(9\pi ) = 0

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5 0
3 years ago
The acceleration due to the earth's gravity, in si units, is 9.8 m/s2. in the absence of air friction, a ball is dropped from re
gogolik [260]
We don't know anything about the amount of distance it travels, but that's okay. The only equation we need here is 

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Now we just plug in the values.
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Answer: 28.96 V

Explanation:

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To solve this, we use the formula

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5 0
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