answered
Jan 21, 2018
by
anonymous

selectedJan 21, 2018
by NITIN P. DESHMUKH

selected

commented
Jan 21, 2018
by
NITIN P. DESHMUKH

Thanks,then we should have to change the definition of current.because current is flow opposite to flow of electrons.it may definition of conventional current.

commented
Aug 7, 2018
by
gabriel orina

**Description :** The electric field exist around: (a) Charges (b) On the left side (c) At the –ve charge (d) At the +ve charge

**Last Answer :** (a) Charges

**Description :** A long straight wire carries the current along +ve x-direction. Consider four points in space `A(0,1,0), B(0,1,1), C(1,0,1), and D(1,1,1)`. Which of t

**Last Answer :** A long straight wire carries the current along +ve x-direction. Consider four points in space `A(0,1,0), B(0,1,1) ... B. A and C C. B and C D. B and D

**Description :** Why is it that protons are not considered a source of moving charges for current flow?

**Last Answer :** Protons themselves are not mobile positive charges because they are tightly bound in the nucleus of the atom and cannot be released except by nuclear forces. Therefore, a current of positive charges is a flow of either positive ions in liquids and gases or positive holes in semiconductors.

**Description :** A vector, P, makes an angle θ in anticlockwise direction with positive x-axis in x-y plane. The x-component of vector is Px . The vector is, rotated by 30° in clockwise direction. ' Px is x-component of vector now. \(\frac{P_x}{P_x} ... ) (3) \(\sqrt{1+\sqrt{3}}\) (4) \((2+\sqrt{3})^{\frac{-1}{2}}\)

**Description :** When both the fluids flow concurrently in an absorber, the slope of the operating line is (A) -ve (B) +ve (C) 1 (D) -1

**Last Answer :** (A) -ve

**Description :** Choose the best definition of a dipole. a) A pair of equal and like charges located at the origin b) A pair of unequal and like charges located at the origin c) A pair of equal and unlike charges separated by a small distance d) A pair of unequal and unlike charges separated by a small distance

**Last Answer :** c) A pair of equal and unlike charges separated by a small distance

**Description :** The conventional current is due to the flow of a. atoms and molecules b. positive charges c. negative charges d. both b and c

**Last Answer :** b. positive charges

**Description :** The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is (A) 0 (B) ∞ (C) -ve (D) +ve

**Last Answer :** (C) -ve

**Description :** What is the direction of flow of current?

**Last Answer :** Current flows from anode to cathode(opposite direction to flow of electrons)

**Description :** What is the direction of the conventional current flow?

**Last Answer :** The conventional current flow in opposite direction of flow of electrons. The electrons flow from negative terminal of battery to positive terminal of battery. And conventional current flow from positive terminal of battery to negative terminal of battery.

**Description :** What is the direction of flow of electric current in an electric circuit?

**Last Answer :** It flows from anode to cathode (direction of holes flow)

**Description :** In figure, two positive charges q2 and q3 fixed (symmetrically) along y-axis, exert a net electric force in the +x direction. On charge q1 fixed along the x-axis. If a charge +Q' is added ... negative x-axis (4) shall increase but direction changes because of the intersection of Q with q2 and q3

**Description :** A particle of mass m' and carrying a charge q' is kept at rest at point A, is a uniform electric field of intensity E. At time instant t = 0, the particle released from A. At t = t, it hits a block at B (AB = x) elastically, ... {1/2}\) (3) \(2\sqrt{\frac{Exq}{m}}\) (4) \((\frac{qEx}{m})^{1/2}\)

**Description :** A pair of point charges q1 = +4 μC and q2 = -1.5 μC are moving in a frame of reference with the velocities v1 and v2 (v1 = 2 x 105 m / s, v2 = 8 x 105 m / s , as shown. The magnitude and direction of the ... outwards (2) 1.64 10-6 T outwards (3) 3.24 10-6 T inwards (4) 1.64 10-6 T inwards

**Description :** 7. Assertion: When an electric dipole is placed in an electric field making an angle 0 with the direction of the field, it experiences a torque but zero net force. Reason : The charges constituting the electric ... action are separated by some perpendicular distance between them. 1. A 2. B 3. C 4. D

**Description :** Two charges 1C and -4C exists in air. What is the direction of force? a) Away from 1C b) Away from -4C c) From 1C to -4C d) From -4C to 1C

**Last Answer :** c) From 1C to -4C

**Description :** Charges filled inside a cylindrical will possess flux in which direction? a) Upwards b) Downwards c) Laterally outwards d) Inwards

**Last Answer :** c) Laterally outwards

**Description :** If a current of 500 mA charges a dielectric for 2 s, how much charge is stored in the dielectric?

**Description :** If a current of 1.5 A charges a dielectric for 5 s, how much charge is stored in the dielectric?

**Description :** If the sum of two +ve numbers is 18 then the maximum value of their product is

**Last Answer :** If the sum of two +ve numbers is 18 then the maximum value of their product is A. 8,10 B. 9,9 C. 6,12 D. None of these

**Description :** In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be (A) ΔQ = 0, ΔS=0 (B) ΔQ = 0, ΔS = +ve (C) ΔQ = 0, ΔS = -ve (D) ΔQ = +ve, ΔS= +ve

**Last Answer :** (B) ΔQ = 0, ΔS = +ve

**Description :** If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to (a) + v (b) – ve (c) zero (d) pressure x volume (e) any where between zero and infinity.

**Last Answer :** Answer : c

**Description :** A capacitor and a coil are connected in series. The capacitor is charged and allowed to discharge through the coil. The current that will then flow through the capacitor-coil combination will do ... but diminish steadily to zero z) oscillate at high frequency at first but then at slower frequency

**Last Answer :** ANSWER: Y -- OSCILLATE BUT DIMINISH STEADILY TO ZERO

**Description :** How can we identify the ‘+ve’ or’-ve’ factor in the blood groups?

**Description :** At which of the following stage(s), the degeneracy do not occur in transportation problem? (m, n represents number of sources and destinations respectively) (a) While the values of dual variables ui and vj cannot be computed. (b) While ... and (d) (3) (a) and (d) (4) (a), (b), (c) and (d)

**Last Answer :** (3) (a) and (d)

**Description :** Do Static charges flow continuously true or false?

**Last Answer :** Feel Free to Answer

**Description :** The best definition of polarisation is a) Orientation of dipoles in random direction b) Electric dipole moment per unit volume c) Orientation of dipole moments d) Change in polarity of every dipole

**Last Answer :** b) Electric dipole moment per unit volume

**Description :** A body is projected from the surface of the earth with a velocity equal to three times the escape velocity (ve = 11.2 Kms-1) for the surface of the earth. Ignoring the presence of other celestial objects, find the velocity of this body far away from the earth.

**Description :** Assuming that the earth has become a black-hole what would be maximum radius of that blackhole? (Hint: For a black-hole ve ≥ c, the velocity of light. M = 6 x 1024 kg for earth).

**Description :** Suppose the carrier wave is modulated in accordance with the amplitude of a message signal. The modulation index is m. The Instantaneous carrier voltage is represented by, vc = Vc sinωet . The instantaneous modulating voltage is ... ) Ve sinωet (2) Vm sinωmt (3) Ve(1+sinωmt) (4) Ve(1+sinωmt)sin ωet

**Description :** Suppose the carrier wave is modulated in accordance with the amplitude of a message signal. The modulation index is m. The Instantaneous carrier voltage is represented by, ve = Vc sinωet . The instantaneous modulating voltage is ... ) Ve sinωet (2) Vm sinωmt (3) Ve (1+sinωmt) (4) Ve (1+sinωmt)sinωet

**Description :** Suppose the carrier wave is modulated in accordance with the amplitude of a message signal. The modulation index is m. The Instantaneous carrier voltage is represented by, ve = vesin 2πfet. The instantaneous modulating voltage is presented by ... is equal to, (1) 2fm (2) 2fc (3) fc - fm (4) fc + fm

**Description :** What are some fun things to do on your own when you‘ve just gotten out of a relationship?

**Last Answer :** If you had some things that you used to do together, try doing them. You need to remember, that you can still do them on your own, and are not dependant on the other person. Also, give ... play videogames that require some calcuations or thinking, it's easy way to get your mind of things...

**Description :** Is the word "I'd've" considered proper grammar?

**Last Answer :** I’ve’rd it u’db’f’re, so why n’t?

**Description :** Ever fallen in Love with someone, you shouldn't've fallen in love with?

**Last Answer :** I might not have fallen in love with some girls I should have fallen in love with. My brain rarely lets my heart make any decisions.

**Description :** What`s the best documentary you`ve ever seen?

**Last Answer :** Dear Zachary: A Letter to a Son About His Father This is a must see. I have never cried so hard in my life.

**Description :** What`s the funniest joke you`ve ever heard?

**Last Answer :** There once was a man from Nantucket….oh, wait. Nevermind.

**Description :** I;ve been told my yellow pine trees have nematoads what is the cure

**Last Answer :** some are benificial......................I would check with your local forrester.

**Description :** Show that x + a is a factor of xn + an for any odd +ve integer n. -Maths 9th

**Last Answer :** Let f(x) = xn + an x + a will be the factor of xn + an if f(-a) = 0 Now f(-a) = (-a)n + an = 0 (since n is a odd +ve integer) Thus (x +a) is a factor of xn + an .