- AFluorescent lamp
- BIncandescent lamp
- C$\text{CFL}$
- ✓Both $(A)$ and $(C)$
Fluroscent lamp and compact fluroscent lamp works based on the low pressure gas discharge principle.
The glass tube if low pressure gas discharge lamp is filled with noble gas at low pressure and small quantity of mercury.
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$(A)$ $4$ if wires are in parallel
$(B)$ $2$ if wires are in series
$(C)$ $1$ if wires are in series
$(D)$ $0.5$ if wires are in parallel.
$(A)$ $\vec{B}(x, y)$ is perpendicular to the $x y$-plane at any point in the plane
$(B)$ $|\vec{B}(x, y)|$ depends on $x$ and $y$ only through the radial distance $r=\sqrt{x^2+y^2}$
$(C)$ $|\vec{B}(x, y)|$ is non-zero at all points for $r$
$(D)$ $\vec{B}(x, y)$ points normally outward from the $x y$-plane for all the points between the two loops