How Long Does It Take For A Tv Capacitor To Discharge
The discharge time of the TV capacitor depends on the type of TV. Some of the capacitors discharge within minutes... View Article
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What Happens When A Battery Is Disconnected From A Capacitor
The capacitor gets charged to the battery voltage before it is disconnected from a battery. When the battery is disconnected... View Article
The Length Of Longer Diagonal Of The Parallelogram Constructed On 5a 2b And A 3b
1) 15 2) √113 3) √593 4) √369 Answer: (3) √593 Solution: As per the given condition, the length of... View Article
Let Abcd Be The Parallelogram Whose Sides Ab And Ad Are Represented By The Vectors 2i4j5k And I2j3k
1) (3i-6j-2k)/3 2) (3i+6j+2k)/3 3) (3i-6j-2k)/7 4) (3i+6j-2k)/7 Answer: (4) (3i+6j-2k)/7 Solution: Given, AB = 2i+4j-5k AD = i+2j+3k AC... View Article
Which Is Correct Two Non Zero Non Collinear Vectors Are Linearly Independent Any Three Coplanar Vectors Are Linearly Dependent
1) Only I 2) Only II 3) Both I and II 4) Neither I nor II Answer: (3) Both I... View Article
If The Vector A 2i3j6k And B Are Collinear And B 21 Then B Is Equal To
1) ±(2i+3j+6k) 2) ±3(2i+3j+6k) 3) (i+j+k) 4) ±21(2i+3j+6k) Answer: (2) ±3(2i+3j+6k) Solution: Given, vector a = 2i+3j+6k and |b| =... View Article
The Position Vector Of Mid Point Lying On The Line Joining The Points Whose Positions Vectors Are Ijk And Ijk Is
1) j 2) i 3) k 4) 0 Answer: (2) i Solution: Midpoint of line = ((1+1)/2,(1-1)/2,(-1+1)/2) M = (1,0,0)... View Article
The Figure Formed By The Four Points Ijk 2i3j 5j2k And Kj Is
1) trapezium 2) rectangle 3) parallelogram 4) None of these Answer: 4) None of these Solution: Given, four points, say... View Article
The Vector Ab 3i5j4k And Ac 5i5j2k Are The Sides Of A Triangle Abc The Length Of The Median Through A Is
1) √13 units 2) 2√5 units 3) 5 units 4) 10 units Answer: (3) 5 units Solution: Let AD is... View Article
The Value Of A For Which The Points A B And C With Position Vectors 2ijk And I3j5k And Ai3jk
1) –2 and – 1 2) –2 and 1 3) 2 and –1 4) 2 and 1 Answer: (4) 2... View Article
If 2i4j5k And I2j3k Are Adjacent Sides Of A Parallelogram Then The Lengths Of Its Diagonals Are
1) 7,√69 2) 6, √59 3) 5, √65 4) 5, √55 Answer: (1) 7,√69 Solution: Suppose ABCD is the parallelogram... View Article
A Vector Has Components 2p And 1 With Respect To A Rectangular Cartesian System
1) p = 0 2) p = 1 or p = –1/3 3) p = – 1 4) p =... View Article
The Position Vectors Of The Vertices Of An Equilateral Triangle Whose Orthocentre Is At The Origin Then
1) a + b + c = 0 2) a2 = b2 + c2 3) a + b = c... View Article
The Vector Ixj3k Is Rotated Through An Angle Theta And Doubled In Magnitude Then It Becomes
1) {-⅔, 2} 2) {⅓, 2} 3) {⅔, 0} 4) {2, 7} Answer: (1) {-⅔, 2} Solution: As per the... View Article
If A 1 1 And B 2 M Are Two Collinear Vectors Then M Is Equal To
1) 2 2) 4 3) 3 4) 0 Answer: (1) 2 Solution: Given, a = (1, –1) and b =... View Article
If Abcd Be A Parallelogram M Be The Point Of Intersection Of The Diagonals If O Is Any Point Then Oa Ob Oc Od Is
1) 3OM 2) 4OM 3) OM 4) 2OM 5) 1/2 OM Answer: 4OM Solution: OA+OB+OC+OD=(OM+MA)+(OM+MB)+(OM+MC)+(OM+MD) = 4OM+(MA+MD+MB+MC) = 4OM+(MA−MA+MB−MB) (Since,... View Article
The Position Vectors Of The Points A And B With Respect To O Are 2i2jk And 2i4j4k
1) √(136/9) 2) √(136/3) 3) 20/3 4) √(217/9) 5) 25/3 Answer: (1) √(136/9) Solution: Given, position vectors of the points... View Article
The Resultant Of P2q Where P7i2j3k And Q3ij5k Is
1) √29 2) 4 3) √62 – 2√35 4) √66 Answer: 4) √66 Solution: We have, p=7i−2j+3k q=3i+j+5k Therefore, p−2q=7i−2j+3k−2(3i+j+5k)... View Article
The Summation Of Two Unit Vectors Is A Third Unit Vector Then The Modulus
1) √3 2) 1 – √3 3) 1 + √3 4) – √3 Answer: (1) √3 Solution: Suppose, a and... View Article
If P Is Any Point With In A Abc Then Pa Cp Is Equal To
1) AC + CB 2) BC + BA 3) CB + AB 4) CB + BA Answer: (4) CB +... View Article
