Question

Find the heat energy produced as a resistance of 10ohm when 5A current flows through it for 5minutes

Answer 1

Answer:

75 Kilojoules

Explanation:

Given :

• Resistance of the resistor = r = 10 ohms

• Current flowing through the circuit = I = 5 Amperes

• Time taken = t = 5 minutes = 5×60 = 300 seconds

To find :

• Heat energy produced in the circuit

Heat energy produced = I²RT

Heat energy produced = 5²×10×300

Heat energy produced = 25×10×300

Heat energy produced = 250×300

Heat energy produced = 75,000 Joules

75,000 joules = 75 Kilojoules

The heat energy produced is equal to 75 Kilojoules

Answer 2

Answer:

Given:

• Resistance = 10 ohms
• Current = 5 A
• Time = 5 min

Find:

• Find the heat energy produced.

Know terms:

1. Resistance = (R)
2. Current = (I)
3. Time = (T)
4. Amperes = (A)
5. Heat produced = (H)
6. Joule = (K)
7. Kilojoules = (Kj)

Note:

• Converting 5 min into sec (1 min = 60 sec) = (5 min × 60 = 300 sec).

Using formula:

⇒ ${\sf{\underline{\boxed{\red{\sf{ Current^2 \: Resistance \times Time}}}}}}$

Calculations:

⇒ $\bold{H = 5^2 \times 10 \times 300}$

⇒ $\bold{H = 25 \times 10 \times 300}$

⇒ $\bold{H = 250 \times 300}$

⇒ ${\sf{\underline{\boxed{\red{\sf{H = 75000}}}}}}$

• 75,000 J = 75 Kj

Therefore, 75 kj is the heat energy produced.