As Z=R2+XL2=R2+(2πfVL)2 As /=ZV,P=/2R i.e., V↑,L↑⇒Z↑,/↓ and P↓
NEET UG 2013 — Physics Electromagnetism
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when
Held on 30 Apr 2013 · Verified 9 Jul 2026.
frequency of the AC source is decreased
number of turns in the coil is reduced
a capacitance of reactance XC=XL is included in the same circuit
an iron rod is inserted in the coil
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Two point charges +2μC and -2μC are placed 10 cm apart. The electric field at the midpoint is:
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