A battery of emf 15V and internal resistance 2ohm is connected to two resistor of 4 and 6ohms joined in series. Find electrical energy spent per minute in 6ohm resistor.
Open in App
Solution
EMF = 15 V Total resistance in the circuit = 2 + 4 + 6 = 12 Ω Current = I = 15/12 = 5/4 = 1.25 A
Energy in 1 min = Power * time duration = I² R * T = 5²/4² Α² * 6 Ω * 60 sec = 562.50 Joules