Potential Difference Problems 2u114n
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Physics 40S
Problems – Potential Difference 1. If 4.00 x 1010 electrons travel from the negative to the positive terminal of a 6 volt battery: a) How many coulombs of charge flow? b) How much energy could be supplied? 2. If 6.00 x 1014 electrons travel from the negative to the positive terminal of a 12.0 volt battery: a) How many coulombs of electric charge flow? b) How much work could be done by this much electric charge?
+ + + +
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3. If 3.15 Joules of work are done in moving 0.35 C of charge between the plates, what is the potential difference across the plates? (i.e. what is the voltage of the battery the plates are connected to?)
4. If a battery does 1.80 x 10-5 Joules of work in moving a charge of 1.50 x 10-6 C between the plates, what is the voltage of the battery? + + + +
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5. How much work is done in moving 1.2 x 10-2 C of charge between two plates whose Potential difference is 6.00 volts? 6. How much work is done in transporting 0.40 C of charge between two plates, which are connected, to a 5000 volt source? 7.
6 Volts
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+ + + + 0.2 m
Two plates have a potential difference of 6.00 volts and are 20 cm (.20 m) apart. If .15 C of electric charge is moved between the plates, find: a) amount of work done in moving the charge b) force exerted on the charge
Physics 40S
c)
electric field strength (2 ways)
8.
200 Volts
Potential difference between the plates is 200 volts, and they are 8.00 mm apart. If 2 x 10-6 C of electric charge is moved between the plates, find: a) amount of work done in moving the charge b)force exerted on the charge c) electric field strength (2ways)
-
+ + + + 8 mm
9. The two horizontal parallel plates of a vacuum tube are 2.00 cm apart and connected across 120 volts. Find: a) the electric field strength, E, in the space between the plates. b) the electrical force, F, acting on an electron (q = 1.60 x 10-19 C) in the space between the plates. c) The energy, W, gained by an electron in travelling 2.00 cm from cathode to anode. 10.
-
+ + + +
An object of charge 1.6 x 10-6 C has a force of 4.00 x 10-2 N exerted on it when located between two charged plates as shown. Find: a) work done on the charge when it moves from the positive to the negative plate b) electric field strength c) voltage applied to the plates (2 ways)
20 cm
11.
-
+ + + + 20 cm
An object of charge 4.50 x 10-6 C has a force of 9.00 x 10-3 N exerted upon it when located between two charged plates as shown. Find: a) work done on the charge as it moves from the positive to the negative plate b) electric field strength c) voltage applied to the plates (2 ways)
Physics 40S
12.
+ + + +
-
An alpha particle of mass 6.68 x 10-27 kg and charge 6.40 x 10-19 C is suspended between 2 plates separated by a distance of 2.00 cm. Find: Fe a) Fe exerted on the Fg charged particle b) electric field strength c) voltage applied to the plates
-
13.
Fg
+ + + +
Fe
A hydrogen (H+) of mass 1.67 x 10-27 kg and charge of 1.60 x 10-19 C is suspended between 2 plates which are separated by a distance of 1.50 cm. Find: a) Fe exerted on the ion b) electric field strength c) voltage applied to the plates
14. A charged particle of mass 4.00 x 10-14 kg is suspended between 2 charged plates separated by a distance of 2.50 cm, and with a potential difference of 500 V. Find: a) electric field strength b) Fe exerted on the particle c) Charge on the particle 15. A charged particle of mass 6.00 x 10-13 kg is suspended between 2 charged plates separated by a distance of 2.00 cm, and with a potential difference of 250 volts. Find: a) electric field strength b) Fe exerted on the particle c) Charge on the particle
Physics 40S
Physics 40S
ANSWERS PROBLEMS – POTENTIAL DIFFERENCE 1. a) 6.40 x 10-9 C c) 3.84 x 10-8 J 2. a) 9.60 x 10-5 C c) 1.15 x 10-3 J 3. 9.00 V 4. 12 V 5. 7.20 x 10-2 J 6. 2000 J 7. a) 0.90 J b) 4.5 N c) 30.0 N/C 8. a) 4.00 x 10-4 J b) 0.05 N c) 25 000 N/C 9. a) 6000 N/C b) 9.60 x 10-16 N c) 1.92 x 10-17 J 10. a) 8.00 x 10-3 J b) 25 000 N/C c) 5 000 V 11. a) 1.80 x 10-3 J b) 2 000 N/C c) 400 V 12. a) 6.55 x 10-26 N b) 1.02 x 10-7 N/C c) V = 2.05 x 10-9 V 13. a) 1.64 x 10-26 N b) 1.02 x 10-7 N/C c) 1.53 x 10-9 V
14. a) 20 000 N/C b) 3.92 x 10-13 N c) 1.96 x 10-17 C 15. a) 12 500 N/C b) 5.88 x 10-12 N c) 4.7 x 10-16 C
Problems – Potential Difference 1. If 4.00 x 1010 electrons travel from the negative to the positive terminal of a 6 volt battery: a) How many coulombs of charge flow? b) How much energy could be supplied? 2. If 6.00 x 1014 electrons travel from the negative to the positive terminal of a 12.0 volt battery: a) How many coulombs of electric charge flow? b) How much work could be done by this much electric charge?
+ + + +
-
3. If 3.15 Joules of work are done in moving 0.35 C of charge between the plates, what is the potential difference across the plates? (i.e. what is the voltage of the battery the plates are connected to?)
4. If a battery does 1.80 x 10-5 Joules of work in moving a charge of 1.50 x 10-6 C between the plates, what is the voltage of the battery? + + + +
-
5. How much work is done in moving 1.2 x 10-2 C of charge between two plates whose Potential difference is 6.00 volts? 6. How much work is done in transporting 0.40 C of charge between two plates, which are connected, to a 5000 volt source? 7.
6 Volts
-
+ + + + 0.2 m
Two plates have a potential difference of 6.00 volts and are 20 cm (.20 m) apart. If .15 C of electric charge is moved between the plates, find: a) amount of work done in moving the charge b) force exerted on the charge
Physics 40S
c)
electric field strength (2 ways)
8.
200 Volts
Potential difference between the plates is 200 volts, and they are 8.00 mm apart. If 2 x 10-6 C of electric charge is moved between the plates, find: a) amount of work done in moving the charge b)force exerted on the charge c) electric field strength (2ways)
-
+ + + + 8 mm
9. The two horizontal parallel plates of a vacuum tube are 2.00 cm apart and connected across 120 volts. Find: a) the electric field strength, E, in the space between the plates. b) the electrical force, F, acting on an electron (q = 1.60 x 10-19 C) in the space between the plates. c) The energy, W, gained by an electron in travelling 2.00 cm from cathode to anode. 10.
-
+ + + +
An object of charge 1.6 x 10-6 C has a force of 4.00 x 10-2 N exerted on it when located between two charged plates as shown. Find: a) work done on the charge when it moves from the positive to the negative plate b) electric field strength c) voltage applied to the plates (2 ways)
20 cm
11.
-
+ + + + 20 cm
An object of charge 4.50 x 10-6 C has a force of 9.00 x 10-3 N exerted upon it when located between two charged plates as shown. Find: a) work done on the charge as it moves from the positive to the negative plate b) electric field strength c) voltage applied to the plates (2 ways)
Physics 40S
12.
+ + + +
-
An alpha particle of mass 6.68 x 10-27 kg and charge 6.40 x 10-19 C is suspended between 2 plates separated by a distance of 2.00 cm. Find: Fe a) Fe exerted on the Fg charged particle b) electric field strength c) voltage applied to the plates
-
13.
Fg
+ + + +
Fe
A hydrogen (H+) of mass 1.67 x 10-27 kg and charge of 1.60 x 10-19 C is suspended between 2 plates which are separated by a distance of 1.50 cm. Find: a) Fe exerted on the ion b) electric field strength c) voltage applied to the plates
14. A charged particle of mass 4.00 x 10-14 kg is suspended between 2 charged plates separated by a distance of 2.50 cm, and with a potential difference of 500 V. Find: a) electric field strength b) Fe exerted on the particle c) Charge on the particle 15. A charged particle of mass 6.00 x 10-13 kg is suspended between 2 charged plates separated by a distance of 2.00 cm, and with a potential difference of 250 volts. Find: a) electric field strength b) Fe exerted on the particle c) Charge on the particle
Physics 40S
Physics 40S
ANSWERS PROBLEMS – POTENTIAL DIFFERENCE 1. a) 6.40 x 10-9 C c) 3.84 x 10-8 J 2. a) 9.60 x 10-5 C c) 1.15 x 10-3 J 3. 9.00 V 4. 12 V 5. 7.20 x 10-2 J 6. 2000 J 7. a) 0.90 J b) 4.5 N c) 30.0 N/C 8. a) 4.00 x 10-4 J b) 0.05 N c) 25 000 N/C 9. a) 6000 N/C b) 9.60 x 10-16 N c) 1.92 x 10-17 J 10. a) 8.00 x 10-3 J b) 25 000 N/C c) 5 000 V 11. a) 1.80 x 10-3 J b) 2 000 N/C c) 400 V 12. a) 6.55 x 10-26 N b) 1.02 x 10-7 N/C c) V = 2.05 x 10-9 V 13. a) 1.64 x 10-26 N b) 1.02 x 10-7 N/C c) 1.53 x 10-9 V
14. a) 20 000 N/C b) 3.92 x 10-13 N c) 1.96 x 10-17 C 15. a) 12 500 N/C b) 5.88 x 10-12 N c) 4.7 x 10-16 C
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