An alternating emf given by equation $E = 300 sin [(100\pi )t]$ $volt$ is applied to a resistance $100\ ohms$.

The rms current through the circuit is (in $amperes$):

$220 \mathrm{~V}-60 \mathrm{~W}$ ও $220 \mathrm{~V}-80 \mathrm{~W}$

এর ২টি বাল্ব 1টি 220V উৎসের সাথে শ্রেণিতে যুক্ত আছে।

When the balance point is obtained in the potentiometer, a current is drawn from

In a series circuit, $R=300 \Omega, L=0.9 H,C=2.0 \mu F$ and $\omega=1000 rad/s$. The impedance of the circuit is 

$B_1, B_2$ and $B_3$ are three identical bulbs connected as shown in Figure 12.8. When all the three bulbs glow, a current of 3A is recorded by the ammeter A.

How much power is dissipated in the circuit when all the three bulbs glow together?