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Q.

If ϕ is phase difference between current and voltage, the wattless component of current is

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a

∣cos ⁡ϕ

b

∣sin⁡ ϕ

c

∣tan ⁡ϕ

d

Icos2 ⁡ϕ

answer is B.

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Detailed Solution

Ivsin⁡ ϕ component of current gives no power consumption and hence is called wattless current.
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If ϕ is phase difference between current and voltage, the wattless component of current is