Solution:
Evaluating the value, R= V/I = 4.5V/3A= 1.5Ω
As we know that, substituting the value of parameters in P= I2R, we get
= (3A)2 x 1.5 Ω
= 13.5 W
B1, B2, and B3 are three identical bulbs connected as shown in Figure 12.8. When all the three bulbs glow, a current of 3A is recorded by ammeter A. How much power is dissipated in the circuit when all the three bulbs glow together?
B1, B2, and B3 are three identical bulbs connected as shown in Figure 12.8. When all the three bulbs glow, a current of 3A is recorded by ammeter A. How much power is dissipated in the circuit when all the three bulbs glow together?