The electrons in a cathode ray tube are accelerated from cathode(negative terminal) to anode(positive terminal) by a potential difference of 2000 V. If this potential difference is increased to 8000 V the electrons will arrive at the screen with a. twice the kinetic energy and four times the velocity. b. four times the kinetic energy and four times the velocity. c. twice the kinetic energy and the same velocity. d. twice the kinetic energy and twice the velocity. e. four times the kinetic energy and twice the velocity.

Q: 3. The electrons in the lab are accelerated through a potential difference that you control. What is…

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Q: 3. An electron enters a parallel plate apparatus 10.0 cm long and 2.0 cm wide, moving horizontally…

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Q: An Electron is emitted by heating a cathode and is accelerated by the potential difference between…

A: Given- Voltage V= 800 V  If v is the velocity gained by electron when accelerated under a potential…

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A: Given data: Separation distance d=5.5mm=5.5×10-3m Electric field  E= 29 N/C

Q: The distance, r, between the proton and electron in the hydrogen atom is about 10-10 m.  Determine…

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Q: Q06. A nerve cell fires with a frequency of 50 Hertz (50 firing each s firing, 105 singly-charged…

A: We know that the work done by the moving charge is given as  W= qV  where V is the electric…

Q: An electron (me=9.11x10-3¹ kg) is accelerated across a 20V potential difference generated by a…

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Q: Q3:Two parallel plates A and B are spaced 1 cm apart. A stream of electrons is projected at an…

A: Given, Separation between plates d =1cm accelerating voltage =2 kVangle = 300

Q: How much kinetic energy does an electron lose when it goes from point a to point b if the voltage…

A: Given data:  Electron slowing down  Potential difference (ΔV) = 50 V Required: The loss in kinetic…

Q: 16. A 2.50 x 10-13 kg oil drop accelerates upward at a rate of 2.80 m/s2 when placed between two…

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Q: 10. Figure shows an electron gun that emits electrons at very small angel with axis. The paraxial…

A: Mass of electron=mCharge on electron =eMagnetic field=BPotential difference=V            π2=10

Q: The distance, r, between the proton and electron in the hydrogen atom is about 10-10 m. Determine…

A: Given, r=10-10 mcharge of the electron q=1.6×10-19C

Q: 6. A small ball of mass 2.5 x 10-4 kg is suspended on a 70.0 cm string, halfway between two parallel…

A: Mass of ball is: Length of string is: Distance between plates is: Number of electrons is:

Q: 2. The figure shows two parallel plates. The graph indicates the potential at points (X1= 0.300 m…

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Q: An electron accelerates between the cathode and the anode. It passes through a potential difference…

A: Given data V=2000 Vq=1.6×10-19 Cm=9.1×10-31 kg Here, V is the potential, q is the charge. Here, m is…

Q: and the cloud"? 3 Suppose that in a lightning flash the potential difference be- tween a cloud and…

A: The potential difference ∆V = 1×109 V Charge transferred q= 30 C

Q: Find velocity of the electron when it comes out of the parallel plates

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Q: Two parallel plates and one of them is located at a distance of d from the other, the potential…

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Q: What is the electric potential energy of two protons separated by 3.2 nm? O A) 0.045 ev B) 0.45 ev )…

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Q: 2. A negative test charge would be at a high electric potential when held C. Farther away from a…

A: As per our guidlines we are supposed to answer only three question for as MCQ. kindly repost other…

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Q: and 3 Suppose that in a lightning flash the potential difference be- tween a cloud and the ground is…

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Q: 6. An electron is fired at 5.2x107 m/s between two electric plates. If the plates are 6.0 cm in…

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Q: 5. What is the potential difference required to accelerate a deuteron of mass 3.3 x 10-27 kg and…

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.