The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in figure. Which of the following statement is correct.

Question

The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in figure. Which of the following statement is correct. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/8e5ae77ac5e164ec6cf49ce74502765e-.png" /> (A) The voltage lag behind the current by π / 2 (B) The voltage leads the current by π / 2 (C) The voltage and the current are in phase (D) The voltage leads the current by π

Tardigrade Admin · Accepted Answer

At t=0, phase of the voltage is zero, while phase of the current is (-π/2), i.e., voltage leads by (π/2)

Q. The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in figure. Which of the following statement is correct.

The voltage lag behind the current by $π /2$

The voltage leads the current by $π /2$

The voltage and the current are in phase

The voltage leads the current by $π$

At $t = 0$ , phase of the voltage is zero, while phase of the current is $\frac{- π}{2},$ i.e., voltage leads by $\frac{π}{2}$

Q. The variation of the instantaneous current (I) and the instantaneous emf (E) in a circuit is as shown in figure. Which of the following statement is correct.

The voltage lag behind the current by π/2

The voltage leads the current by π/2

The voltage and the current are in phase

The voltage leads the current by π

At t=0, phase of the voltage is zero, while phase of the current is 2−π​, i.e., voltage leads by 2π​

The voltage lag behind the current by $π /2$

The voltage leads the current by $π /2$

The voltage leads the current by $π$

At $t = 0$ , phase of the voltage is zero, while phase of the current is $\frac{- π}{2},$ i.e., voltage leads by $\frac{π}{2}$