Question

please try to solve this in less than 1 hour

Q1: Choose the correct answer with explaining. [10 Marks) 1. Which of the following is not true? 6. Find the permittivity of the surface a) A. (B. C) = scalar value when a wave incident at an angle 60 is b) A. (B x C)=scalar value reflected by the surface at 45 in air. c) AX (B.C)=scalar value a) 1.41 d) A x (B x C) = vector value b) 3.5 2. Electromagnetic forces are defined by c) 2.2 a) Fleming's right hand rule d) 1.73 b) Fleming's left hand rule 7. Convert the point (3,4,5) from Cartesian c) Faraday's law to spherical coordinates d) Ampere law a) (7.07,450,53) 3. The electric flux density of a surface b)(0.707,450,539) with permittivity of 2 is given by 12 units. c) (7.07,549,639) What the flux density of the surface in air? d) (0.707,540,639) a) 24 8. Find the magnetic flux density of a b) 6 finite length conductor of radius 12cm and c) 1/6 current 3A in air ( in 106 order) d) 0 a) 4 4. The Stoke's theorem can be used to find b) 5 which of the following? a) Area enclosed by a function in the d) 7 given region 9. The sequence for finding H from E is b) Volume enclosed by a function in the a) E-B-H given region c) Linear distance b) E-V-H d) Curl of the function c) E-D-H d) E-A-H 5. The capacitance of a material refers to 10. Two charges IC and -4C exists in air. a) Ability of the material to store magnetic field What is the direction of force? b) Ability of the material to store a) Away from IC electromagnetic field b) Away from -4C c) Ability of the material to store electric field c) From IC to -4C d) Potential between two charged plates d) From -4C to IC c) 6

Answer 1

0 A. (8.c) Vector value - A: a, i+a, j+ąsk Bibit be it bak K. c=cit ( it (ak ( 1 + x) + 4, 5, 6, 1 b ) + b, k] (G, 1 x (q; i+a, j+93 +) (bic, t by (3 + b3 (3] a, b,c, it ag ba (ght ag bg ca Ř vector represents b) A B x ) C, Q & scalar value a, be b3 } -> scalar value Ax (B.c) d ) vector value Ax (BXC) m Veillor x vector

2 ) Flemings left hand rule States when current carrying conducto is placed an external maquetic field the conduct experience a force Flemings called Identified using Left hand rule Pleming's Right hand is used to dentify direction of induced Emf c) Electolo magnetic forces are defined (correct an answer) by Ampere's law De Electric fleux density {= permitivity D.EE L Electric field intensity DIE 12 Ei Di Da = > 2 T free air Iw b) D₂ - 6 units

4) Stoke's the from gives Area enclosed by function in the a given region diversen's the dem Gauss by a function in volume enclosed the given region 5 ) capacitance refers the material to Store Ability of electric field 6) w is permitivity - is Ly of air refraction law of According to Tandi when . Tau O2 Ei Tan 60 Tau 45 3 = 1.73 E.

7) (2,4, 2) :( 3,4,5) spherical coll dinates cor, o ®) Ertu 15 7:07 riñty +7 0 : 1921 Yogyan) : "200437*") : 45° Tan ( 413) : 53 Tan'( %) (0,0,0) = (7.07 45' 53")

10) Direction of force exist from 1C to 40 -9 directed Normally are charge force away force directed towards ove charge itself