Question

200j of heat is produced in one second from a resistor of resistance 8 ohms find the potential difference across the resistor and its power

Answer 1

Answer:

40 V is the correct answer.

200 W is the correct answer.

Explanation:

⇒ Power = (Voltage)²÷Resistance

⇒ 200 J × 1 sec = (Voltage)²÷8 Ω

⇒ (Voltage)² = 200 W × 8 Ω

⇒ Voltage = √1600

                 = 40 V                  ←ANSWER

Power = 200 W                  ←ANSWER

PLEASE MARK MY ANSWER AS THE BRAINLIEST!!!!!

Answer 2

The potential difference across the resistor and its power 40 volts and 200 watts respectively.

Explanation:

Given that,

Heat produced from a resistor, H = 200 J

Resistance of the resistor, R = 8 ohms

We need to find the potential difference across the resistor. The heat produced by a resistor is given by :

$H=I^2Rt$

Since, V = IR

So,

$H=\dfrac{V^2}{R}t$

V is the potential difference

$V=\sqrt{\dfrac{HR}{t}}$

$V=\sqrt{\dfrac{200\times 8}{1}}$

$V=40\ volts$

So, the potential difference across the resistor is 40 volts.

The power is given by :

$P=VI$

or

$P=\dfrac{V^2}{R}$

$P=\dfrac{(40)^2}{8}$

P = 200 watts

So, the potential difference across the resistor and its power 40 volts and 200 watts respectively.

Learn more,

Electric circuit

https://brainly.in/question/15552714