Power supplied to a pure inductor averages to zeroशुद्ध प्रेरक को दी गई शक्ति का औसत शून्यPower supplied to a pure inductor averages to zero

NCERT Sec 7.4 · Class 12 Physics · Chapter 7 · interactive diagram

Parts and what they mean

• Voltage v (वोल्टता v) — v = vm sin ωt.
• Current i (धारा i) — i = im sin(ωt − π/2), lagging by π/2.
• Instantaneous power p = vi (तात्क्षणिक शक्ति p = vi) — p = −(im vm/2) sin 2ωt: it oscillates at twice the source frequency.
• Positive power (धनात्मक शक्ति) — While |i| grows, the source feeds energy into the magnetic field of the coil.
• Negative power (ऋणात्मक शक्ति) — While |i| falls, the coil returns the same energy to the source.
• Time axis (ωt) (समय अक्ष (ωt)) — The green and red areas are equal, so the average is zero.

Original diagram drawn by Simple Learning Hub, based on NCERT Sec 7.4. Report a mistake