Four resistors, each with a value of 68 ohms, are connected in parallel across a 220 V source. What is the total current (I)?
چار ریزسٹرس، جن میں سے ہر ایک کی قدر 68 اوہم ہے، ایک 220 V ماخذ میں متوازی طور پر جڑے ہوئے ہیں۔ کل کرنٹ (آئی) کیا ہے؟
Answer: 12.94 A
Explanation
To solve this problem, we need to find the total current (I) drawn from the 220 V source.
First, let's find the current through one resistor:
I1 = V/R = 220 V / 68 ohms = 3.24 A (using Ohm's Law)
Since all resistors are identical and connected in parallel, the current through each resistor is the same:
I1 = I2 = I3 = I4 = 3.24 A
Now, we can find the total current (I) by adding the currents through each resistor:
I = I1 + I2 + I3 + I4 = 3.24 A + 3.24 A + 3.24 A + 3.24 A = 12.96 A ≈ 12.94 A
So, the correct answer is: 12.94 A
