Question

Potential difference across 20 Ω resistor is 20 Volt. What is the heat generated in the resistor in 1 sec.–

Answer 1

Answer:

• 20 J

Explanation:

Given

• Potential difference = 20 Ω
• Resistance = 20 V
• Time = 1 sec

To find

• Heat

Solution

→ H = (V²/R) × Time

• (20²/20) × 1
• (400/20) × 1
• (40/2) × 1
• 20

Hence, the heat energy is 20 J

Answer 2

Given,

Resistance(R) = 20 Ω

Potential Difference (v) = 20 V

To Find,

The heat generated in the resistor in 1 sec.

Solution,

The formula for calculating the heat generated is

Heat = (V²/R)/T

where,

V is the potential difference

R is the resistance

T is the time

So,

Heat = (20*20)/(20*1)

Heat = 20 Joules

Hence, the heat generated in the resistor in 1 sec is 20 Joules.