Question

200 j of heat is produced in one second from a resistor of resistance 8ohms find the potential difference acrosd the resistor and its power

Answer 1

Answer:H= I²RT

H= V²/R

V²= 200×8

V²= 1600

V=√1600

V= 40 v.

Answer 2

Answer:

40 V is the correct answer.

Explanation:

⇒ Power = (Voltage)²÷Resistance

⇒ 200 J × 1 sec = (Voltage)²÷8 Ω

⇒ (Voltage)² = 200 W × 8 Ω

⇒ Voltage = √1600

                 = 40 V                  ←ANSWER

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