**661. Choose the correct statement. In the case of AC circuit ohms law holds for_______________?**

A. Peak values of voltage and current

B. Effective values of voltage and current

C. Instantaneous values of voltage and current

**D. All of the above**

**662. The phase angle between the voltage and the current in an AC circuit consisting of a resistance is______________?**

**A. Zero**

B. 45°

C. 90°

D. 180°

**663. n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then_______________?**

A. V = VR+VL+VC

B. V2 = VR2+VL2+VC2

**C. V2 = VR2+(VL-VC)2**

D. V2 = VL2+(VR-VC)2

**664. A voltage V = V0 cos ωt is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by___________?**

A. V√/√2R

B. V/√2√R

**C. V02/√2R**

D. 2/√2√R

**665. Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?**

A. Each increase

**B. Each decrease**

C. Each remains the same

D. One increases whereas that in the other decreases

**666. An inductor may store energy in ________________?**

A. Its electric field

B. Its coils

**C. Its magnetic field**

D. Both electric and magnetic fields

**667. Addition of vector obeys_____________?**

A. Commutative law

B. Distributive law

C. Associative law

**D. All given laws in A, B and C**

**668. The direction of a vector in space is specified by_______________?**

A. One angle

B. Two angle

**C. Three angle**

D. No angle

**669. A vector can be multiplied by a number. The number may be_______________?**

A. Dimensionless

B. Dimensional scalar

C. Negative

**D. All A, B and C are correct**

**670. Unit vector n^ is along______________?**

A. X-axis

**B. Normal on a surface**

C. Y-axis

D. Z-axis