KWh কিসের একক? 

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

The frequency of the output signal becomes ________ times by doubling the value of the capacitance in the LC oscillator circuit.

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