Question

Q1.A current of 5A is flowing per second in 4ohm resistance .find the potential difference and heat generated?

Answer 1

Explanation:

✬ Potential difference = 20V ✬

✬ Heat = 100J ✬

Explanation:

Given:

Current is 5A.

Resistance is 4 ohms.

Time is 1 second.

To Find:

Potential difference and heat generated?

Formula to be used:

V = IR

H = I²RT

Solution: Here we have

I = 5A

R = 4 ohms

V = ?

H = ?

Putting the values on the first formula

⟹ V = I R

⟹ V = 5 × 4

⟹ V = 20V

So, the potential difference is 20 volts.

Now using the second formula for finding heat generated

⟹ H = I²RT

⟹ H = (5)² × 4 × 1

⟹ H = 25 × 4

⟹ H = 100J

So, the heat generated is 100 Joules.

Answer 2

Answer:

v=IR

here

v= ?

I= 5A

R=4ohm

v= 5×4

= 20v

therefore the potential difference is 20v

h= I²RT

25×4×1

100j

therefore the heat generated is 100j