Question

An electric heater for 45 minutes with a current of 10A.What is the potential difference across the electric heater if it transfers 2.20x10*8 J of energy?

Answer 1

To find the potential difference across the electric heater, we can use the formula:

Potential difference (V) = Energy transferred (J) / Charge (Coulombs)

First, let's find the charge (Coulombs) by using the formula:

Charge (Coulombs) = Current (Amps) x Time (seconds)

Since the time given is in minutes, we need to convert it to seconds:

Time (seconds) = 45 minutes x 60 seconds/minute = 2700 seconds

Now we can find the charge:

Charge (Coulombs) = 10A x 2700s = 27000 C

Now we can calculate the potential difference:

Potential difference (V) = (2.20x10^8 J) / (27000 C)

Potential difference (V) = 8148.15 V

Therefore, the potential difference across the electric heater is approximately 8148.15 V.