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Marta_Voda [28]
3 years ago
8

If the current throught a 6 Ω resistor is 7 A, what is the power absorbed by the resistor? Answer to the nearest 1 W.

Physics
2 answers:
Strike441 [17]3 years ago
5 0

Answer:

290W

Explanation:

The relationship between power (P) absorbed by a resistor, the current (I) flowing through the resistor and the value of resistance is given by;

P = I^{2} x R

This means that the power absorbed by a resistor is the product of the current flowing through it and the value of its resistance.

Given;

I = current flowing = 7A

R = resistance =  6 Ω

Substituting the values of I and R into the equation above gives;

=> P = 7^{2} x 6

=> P = 49 x 6

=> P = 294W

Converting this to the nearest 1W gives 290W.

<em>Therefore, the power absorbed by the resistor is 290W</em>

<em></em>

Stells [14]3 years ago
3 0

Answer:

294 W

Explanation:

Electrical power: This can be defined as the rate at which electrical energy is used or dissipated. The S.I unit of electrical power is Watt(W).

The expression of electrical power is given as,

P = I²R................... Equation 1

Where P = power, I = current, R = Resistance.

Given: I = 7 A, R = 6 Ω

Substitute into equation 1

P = (7)²(6)

P = 294 W.

Hence the power power absorbed by the resistor is 294 W

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V = k Q/r   - (1)

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The electric potential at point C due to charged sphere can be given as:

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The electric potential at point D due to charged sphere can be given as:

V₂ = k Q/r₂

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Now, the change in potential along the path from C to D can be calculated as:

ΔV = V₂ - V₁

     = 450 V - 1350 V

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The negative sign indicates that the work is done against the electric field in moving the charge from C to D.

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Learn more about the electric potential here:

<u>brainly.com/question/12645463</u>

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The difference in the pressure between the inside and outside will be 369.36 N/m²

<h3>What is pressure?</h3>

The force applied perpendicular to the surface of an item per unit area across which that force is spread is known as pressure.

It is denoted by P. The pressure relative to the ambient pressure is known as gauge pressure.

The given data in the problem is;

dP is the change in the presure=?

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