Current in a circuit is wattless if

Question

Current in a circuit is wattless if (A) inductance in the circuit is zero (B) resistance in the circuit is zero (C) current is alternating (D) resistance and inductance both are zero

Tardigrade Admin · Accepted Answer

If R = 0 ⇒ cos φ = 0 ⇒ φ = 90° so P = 0, in this case power loss is zero current flowing in the circuit is called wattless current.

Q. Current in a circuit is wattless if

inductance in the circuit is zero

resistance in the circuit is zero

current is alternating

resistance and inductance both are zero

If $R = 0 \Rightarrow cos ϕ = 0 \Rightarrow ϕ = 9 0^{\circ}$ so P = 0, in this case power loss is zero & current flowing in the circuit is called wattless current.

Q. Current in a circuit is wattless if

inductance in the circuit is zero

resistance in the circuit is zero

current is alternating

resistance and inductance both are zero

If R=0⇒cosϕ=0⇒ϕ=90∘ so P = 0, in this case power loss is zero & current flowing in the circuit is called wattless current.

If $R = 0 \Rightarrow cos ϕ = 0 \Rightarrow ϕ = 9 0^{\circ}$ so P = 0, in this case power loss is zero & current flowing in the circuit is called wattless current.