Question

Assertion (A): In an R-L circuit having low resistance, current lags the voltage by nearly 90°.

Reason (R): Power factor of a series RL circuit is R/Z.

a.

Both A and R are true and R is correct explanation of A

b.

Both A and R are true and R is not the correct explanation of A

c.

A is true but R is false

d.

A is false but R is true

Answer: (a).Both A and R are true and R is correct explanation of A

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Q. Assertion (A): In an R-L circuit having low resistance, current lags the voltage by nearly 90°. Reason (R): Power factor of a series RL circuit is R/Z.

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