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Problems with solutions
| I.D |
Level |
Problem |
Problem Topic |
| 487 |
High school |
In a region where there is an electric field , the electric force do +8.0 x 10^-19 J of work on an electron as it moves from point X to point Y. Which point , X or Y is at a higher potential ? What is the potential difference , Vy – Vx, between point Y and point X ? . . . continues
Click to Purchase Solution |
Electrostatics |
| 488 |
High school |
A helium nucleus (charge +2 e) moves through a potential difference deltaV = -0.50 kV . Its initial kinetic energy is 1.20 x 10^-16J . What is the final kinetic energy ? . . . continues
Click to Purchase Solution |
Electrostatics |
| 489 |
High school |
A parallel plate capacitor has a capacitance of 1.30 nF. There is a charge of magnitude 0.800 microC on each plate . What is the potential difference between the plates ? If the plate separation is doubled , while the charge is kept constant , what will happen to the potential difference ? . . . continues
Click to Purchase Solution |
Electrostatics |
| 490 |
High school |
To make a parallel plate capacitor , you have available two flat plates of aluminum (area 120 cm^2) , a sheet of paper (thickness = .100 mm, k = 3.5), a sheet of glass (thickness 2.0 mm, k = 7.0), and a slab of paraffin (thickness = 10.0 mm , k=2.0). What is the largest capacitance possible using one of these diaelectrics ? What is the smallest ? < . . . continues
Click to Purchase Solution |
Electrostatics |
| 491 |
High school |
A parallel plate capacitor has a charge of 0.020 microC on each plate with a potential difference of 240 V. The parallel plates are separated by 0.40 mm of air . What energy is stored in this capacitor ? . . . continues
Click to Purchase Solution |
Electrostatics |
| 492 |
High school |
A defibrillator is used to restart a person’s heart after it stops beating . Energ is delivered to the heart by discharging a capacitor through the body tissues near the heart . If the capacitance of the defibrillator is 9 microF and the energy delivered is to be 300 J , to what potential difference must the capacitor be charged ? . . . continues
Click to Purchase Solution |
Electrostatics |
| 493 |
High school |
The circuit in the figure which is shown at “click here” is composed of two batteries (V1=4V and V2 = 9V) and four resistors (R1 = 110 ohm, R2 = 40 ohm, R3 = 50 ohm, and R4 = 50 ohm ) as shown .
(a) What is the current which flows through R1 ?
(b) What is the current I 3 that flows through R3 ?
. . . continues
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Current & Electricity |
| 494 |
High school |
The point b and c on the diagram at “click here” are the terminals of a battery with EMF E and internal resistance r. the circuit resistors have the following values :
R1 = 37 ohm, R2 = 41 ohm, R3 = 51 ohm, R4 = 56 ohm
a. An ideal voltmeter is connected between b and c; it reads Vc-Vb = 12V. What is the EMF of the battery ?
continues
Click to Purchase Solution |
Current & Electricity |
| 495 |
High school |
The circuit in the figure which is shown at ‘click here” is composed of two batteries ( E1=5V and E2=4V ) and three resistors (R1 = 3ohm, R2 = 3ohm, R3=4ohm) as shown.
a . What is the current I 3 flowing through the batteries ?
b . What is the voltage Vb-Va between the points a and b in the circuit ?
. . . continues
Click to Purchase Solution |
Current & Electricity |
| 496 |
High school |
In the circuit as shown in the figure at “click here” has
. E = 2V
. r=80 ohm
. R1 = 280 ohm
. R2 = 360ohm
. Internal resistance of the voltmeter = 6 x 10^3 ohm
. The ammeter is ideal (ie, its internal resistance is zero )
(a) What is the magnitude of the percentage error the voltmeter i . . . continues
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Current & Electricity |
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