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# Test: Maxwell Law In Time Static Fields

## 10 Questions MCQ Test Electromagnetic Theory | Test: Maxwell Law In Time Static Fields

Description
This mock test of Test: Maxwell Law In Time Static Fields for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 10 Multiple Choice Questions for Electrical Engineering (EE) Test: Maxwell Law In Time Static Fields (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Maxwell Law In Time Static Fields quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Test: Maxwell Law In Time Static Fields exercise for a better result in the exam. You can find other Test: Maxwell Law In Time Static Fields extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

### Calculate the emf in a material with flux linkage of 3.5t2 at 2 seconds.

Solution:

Explanation: The emf induced in a material with flux linkage is given by Vemf = -dλ/dt. On substituting λ= 3.5t2, we get emf = -7t. At time t = 2sec, the emf will be -14 units.

QUESTION: 2

### Find the emf induced in a coil of 60 turns with a flux rate of 3 units.

Solution:

Explanation: The emf induced is the product of the turns and the flux rate. Thus Vemf = -Ndφ/dt. On substituting N = 60 and dφ/dt = 3, we get emf as -60 x 3 = -180 units.

QUESTION: 3

### Find the electric field intensity of a charge 2.5C with a force of 3N.

Solution:

Explanation: The electric field intensity is the electric force per unit charge. It is given by E = F/q. On substituting F = 2.5 and q = 3, we get E = 3/2.5 units.

QUESTION: 4

The electric field intensity of a field with velocity 10m/s and flux density of 2.8 units is

Solution:

Explanation: The electric field is the product of the velocity and the magnetic flux density given by E = v x B. On substituting v = 10 and B = 2.8, we get E = 10 x 2.8 = 28 units.

QUESTION: 5

The line integral of the electric field intensity is

Solution:

Explanation: From the Maxwell first law, the transformer emf is given by the line integral of the electric field intensity. Thus the emf is given by ∫ E.dl.

QUESTION: 6

Which of the following relations is correct?

Solution:

Explanation: The emf induced in a material is given by the line integral of the electric field intensity. Thus EMF = ∫ E.dl is the correct relation.

QUESTION: 7

For static fields, the curl of E will be

Solution:

Explanation: For static fields, the charges will be constant and the field is constant. Thus curl of the electric field intensity will be zero. This implies the field is irrotational.

QUESTION: 8

The line integral of which parameter is zero for static fields?

Solution:

Explanation: The field is irrotational for static fields. Thus curl of E is zero. From Stokes theorem, the line integral of E is same as the surface integral of the curl of E. Since it is zero, the line integral of E will also be zero.

QUESTION: 9

The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be

Solution: