MCQ
Current in the circuit is wattless, if
- AInductance in the circuit is zero
- ✓Resistance in the circuit is zero
- CCurrent is alternating
- DResistance and inductance both are zero
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$\vec E = 2{E_0}\,\hat i\,\cos\, kz\,\cos\, \omega t$
Its magnetic field $\vec B$ is then given by