Among the listed options, Shockley is the notable transistor inventor associated with Bell Labs and is the best match to this question's intent.

Transistors are primarily used as amplifiers in many electronic circuits, so option A is correct.

An ideal voltage source is defined as having zero internal resistance, so the terminal voltage equals the emf regardless of load.

The capacitor allows AC to pass (continuous flow of AC) while blocking DC, matching option A as marked in the OCR.

Each half is 2 Ω; twisting them together connects the two 2 Ω halves in parallel, giving (2||2)=1 Ω.

An inductor stores energy in the magnetic field created by current through its coil.

X_L = 2πfL, so f = X_L/(2πL) = 500/(2π×1) ≈ 79.6 Hz ≈ 80 Hz, so option B is correct.

Resonant frequency for LC circuits is f = 1/(2π√(LC)).

Total power 10 W with three equal series resistors implies V^2/R = 30 (per one resistor when across same battery), so each individually dissipates 30 W.

Joule heating H = I^2 R t depends on resistance, current and time during which current flows.