Question

Obtain an expression for the energy consumed in a resistor by the passage of an electric current through it, by a suitable diagram.
​

Answer 1

Answer:

Sry , but diagram anhi ban sakte aabhi...!

Answer 2

Answer:

Potential difference across the resistor is 42 volts

Explanation:

It is given that,

Heat produced by a resistor each seconds, H = 220 J

Resistance of a resistor, R = 8 ohms

We have to find the potential across the resistor. Heat developed by a resistor is given by :

H=I^2RtH=I2Rt

Where

According to Ohm's law, I = V/R

So, H=\dfrac{V^2}{R}tH=RV2t

V^2=\dfrac{HR}{t}V2=tHR

V^2=\dfrac{220\ J\times 8\ ohms}{1\ s}V2=1 s220 J×8 ohms

V^2=1760\ voltsV2=1760 volts

V = 41.9 volts

or

V = 42 volts

Hence, this is the required solution.