Question

Q1.If 50 joule of heat is produced in in each second in a 2 ohm resistor.find this potential difference across the resistor​

Answer 1

Explanation:

✬ Potential Difference = 10 V ✬

Explanation:

Given:

Heat given is 50 J.

Time is 1 second.

Resistance is 2 ohms.

To Find:

What is the potential difference ?

Formula to be used:

H = I²RT

V = IR

Solution: We have

H = 50 J

I = ?

R = 2 ohns

T = 1 second

Put the values in the formula

⟹ H = I²RT

⟹ 50 = I² × 2 × 1

⟹ 50/2 = I²

⟹ 25 = I²

⟹ √25 = I

⟹ √5 × 5 = I

⟹ 5 = I

So current is 5 A.

Now we have

V = ?

I = 5 A

R = 2 ohms

Putting the values in second formula

⟹ V = IR

⟹ V = 5 × 2

⟹ V = 10 V

Hence, potential difference is 10 volts.

Answer 2

Answer:

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