Practice portal › Electromagnetic Waves › Maxwell's Equations and the Production of EM Waves
Asked in GUJCET 2011 · Sources: the accelerated charge and Hertz
Idea: Hertz's transmitter is an LC oscillator, so something must supply the inductance and something the capacitance.
The two spheres, one at each end, carry equal and opposite charge across the gap, so they act as the capacitor.
The straight rods carry the oscillating current between them, and a current-carrying conductor stores energy in the magnetic field it sets up, so the rods supply the inductance.
The induction coil only charges the spheres until the air in the gap breaks down and the oscillation starts.
So the rods behave as an inductor.
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