# Physics Electricity - Big One

50 Questions | Total Attempts: 13  Settings  Related Topics
• 1.
A very small ball has a mass of 5.0e-3 Kg and a charge of 4 uC. What magnitude electric field directed upward will balance the weight of the ball?
• A.

1.2e4 N/C

• B.

8.2e2 N/C

• C.

2.0e-2 N/C

• D.

5.1e6 N/C

• E.

3.7e3 N/C

• 2.
Estimate the magnitude of electric field strenght due to the proton of hydrogen atom at a distance of 5.39e-11m. The expected position of the electron in the atom.
• A.

10^-11 n/c

• B.

10^8 n/c

• C.

10^14 n/c

• D.

10^6 n/c

• E.

10^12 n/c

• 3.
The magnitude of the electric force between two protons is 2.3e-26 N. how far apart are they?
• A.

0.10m

• B.

0.022m

• C.

3.1m

• D.

0.0057m

• E.

0.48m

• 4.

• A.

1.0 N/C

• B.

-1.0 N/C

• C.

0

• D.

0.25 N/C

• E.

It varies

• 5.
• A.

0

• B.

-560

• C.

-340

• D.

260

• E.

170

• 6.
• A.

2.56 cm

• B.

5.12 cm

• C.

11.2 cm

• D.

3.34 m

• E.

4.24 m

• 7.
• A.

1.15

• B.

-2.24

• C.

3.91

• D.

-1.15

• E.

0.863

• 8.
• A.

F/12

• B.

F/3

• C.

F/6

• D.

3F/4

• E.

3F/2

• 9.
• A.

Near a long uniformly charge wire

• B.

Above a large uniformly charged plane

• C.

Inside a uniformly charged ball

• D.

Outside a uniformy charged sphere

• E.

Gauss law can be readily applied to find the electric field in all contexts

• 10.
• A.

Repel

• B.

Attract

• C.

Attract or repel

• D.

Exert no electrostatic force

• E.

Charge insulator always spontaneously discharges

• 11.
• A.

The density matter is too great

• B.

The positive nuclei of your body repel the positive nuclei of the atoms of the ground

• C.

The density of the ground is greater than the density of your body

• D.

Atoms are bound together by chemical bonds

• E.

Electrons on the ground's surface of your feet repel one another

• 12.
• A.

Upward and to the right

• B.

To the right

• C.

Downward

• D.

Downward and to the left

• E.

Field is zero at that point

• 13.
• A.

It becomes larger

• B.

It becomes smaller

• C.

It stays the same

• D.

It changes unpredictably

• E.

It is zero

• 14.
• A.

Increase masurably

• B.

Increase by an amount to small to measure directly

• C.

Stay unchanged

• D.

Decrease by an amount to small to measure directly

• E.

Decrease masurably

• 15.
• A.

3.4e-16

• B.

-3.4e-16

• C.

2.5e-16

• D.

-2.5e-16

• E.

-1.6e-19

• 16.
• A.

1.00e4

• B.

1.60e-15

• C.

1.60e-22

• D.

6.25e22

• E.

1.60e-19

• 17.
• A.

140N/C

• B.

-140N/C

• C.

35N/C

• D.

-35N/C

• E.

-75N/C

• 18.
• A.

7.91e5

• B.

3.78e5

• C.

2.13e5

• D.

2.52e6

• E.

3.01e8

• 19.
• A.

The equivalent capacitance is greater than any of the individual capacitances

• B.

The largest voltage appears across the capacitor with the smallest capacitance

• C.

The largest voltage appears across the capacitor with the largest capacitance

• D.

The capacitor with the largest capacitance has the greatest charge

• E.

The capacitor with the smallest capacitance has the smallest charge

• 20.
• A.

18e4

• B.

4.5e4

• C.

0

• D.

-4.5e4

• E.

9e4

• 21.
• A.

88.5 pF

• B.

177 pF

• C.

8.85 uF

• D.

100 uF

• E.

354 uF

• 22.
• A.

It remains the same

• B.

It is doubled

• C.

It decreases by factor of 2

• D.

It decreases by factor of 4

• E.

It increases by factor of 4

• 23.

• A.

The voltage across the capacitor decreases by factor of 2

• B.

The voltage across the capacitor is doubled

• C.

The charge on the plates is doubled

• D.

The charge on the plates decreases by factor of 2

• E.

The electric field is doubled

• 24.
• A.

Energy stored in the capacitor decreases

• B.

Energy stored in the capacitor increases

• C.

The electric field between the plates decreses

• D.

The potential difference between the plates decreases

• E.

The charge on the plates decreases

• 25.
• A.

All capacitors have same charge and the equivalent capacitance is greater than the capacitance of any of the capacitors in the group

• B.

The capacitor with the largest capacitance carries the smallest charge

• C.

The potential difference across each capacitor is the same and the equivalent capacitance is greater than any of the capacitors in the groups

• D.

The capacitor with the smallest capacitance carries the largest charge

• E.

The potential differences across the capacitors are the same only if the capacitances are the same

• 26.
A battery is attached across several different capacitors connected in series. Which of the following statements are true?
• A.

All the capacitors have the same charge and the equivalent capacitance is less than the capacitance of any of the individual capacitors in the group and the largest potential difference appears across the capacitor with the smallest capacitance

• B.

All the capacitors have the same charge and the equivalent capacitance is greater than any of the individual capacitors in the groups

• C.

The capacitor with the largest capacitance carries the largest charge

• D.

The potential difference across each capacitor must be the same

• E.

The largest potential difference appears across the capacitor having the largest capacitance

• 27.
• A.

0.700 ohm

• B.

9.69 ohm

• C.

10.3 ohm

• D.

13.8 ohm

• E.

6.59 ohm

• 28.
• A.

0.83 ohm

• B.

1.2 ohm

• C.

3 ohm

• D.

1.33 ohm

• E.

2.3 ohm

• 29.
• A.

A

• B.

B

• C.

C

• D.

All wires carry the same current

• E.

• 30.
• A.

200C

• B.

20C

• C.

2C

• D.

0.005C

• E.

0.05C

• 31.
• A.

A

• B.

B

• C.

C

• D.

Voltage drops are the same for each

• E.

• 32.
• A.

8

• B.

4

• C.

2

• D.

1

• E.

1/2

• 33.
• A.

3

• B.
• C.

1

• D.
• E.

1/3

• 34.
• A.
• B.
• C.
• D.
• E.
• 35.
• A.

Va=2Vb

• B.

Va=Vb

• C.

Va=Vb/2

• D.

Va=4Vb

• E.

Va=Vb/4

• 36.
• A.
• B.
• C.
• D.

Undefined

• E.

None of these

• 37.
• A.

2

• B.

4

• C.

19

• D.

40

• E.

62

• 38.
• A.

(1/9)R

• B.

(1/3)R

• C.

R

• D.

3R

• E.

9R

• 39.
• A.

Wire 1

• B.

Wire 2

• C.

Wire 3

• D.

All wires have the same resistance

• E.

Not enough information is given

• 40.
• A.

Current

• B.

Power

• C.

Energy

• D.

Charge

• E.

Potential

• 41.
• A.

The smaller resistor carries more current

• B.

The larger resistor carries less current

• C.

The current in each resistor is the same

• D.

The voltage difference across each resistor is the same

• E.

The voltage difference is greatest across the resistor closest to the positive terminal

• 42.
• A.

1.50ohm

• B.

3.00ohm

• C.

0.667ohm

• D.

0.333ohm

• E.

1.33ohm

• 43.
• A.

1.0A

• B.

1.5A

• C.

2.0A

• D.

2.5A

• E.

2.5A

• 44.
• A.
• B.
• C.
• D.
• E.

All equations are correct

• 45.
• A.

0.59A

• B.

1.0A

• C.

11A

• D.

16A

• E.

5.3A

• 46.
• A.

12A

• B.

24A

• C.

32A

• D.

8A

• E.

15A

• 47.
• A.

16W

• B.

32W

• C.

1W

• D.

4W

• E.

8W

• 48.
• A.

RC

• B.

5RC

• C.

10RC

• D.

25RC

• E.

None of these

• 49.
• A.

It never glows because the capacitor represent and open circuit

• B.

It glows only after the capacitor is fully charged

• C.

It glows for a very short time as the capacitor is being charged

• D.

It glows continuously

• E.

It glows intermittently

• 50.
Is a circuit breaker wired
• A.

In series with the device it is protecting

• B.

In parallel

• C.

Neither in series nor in parallel

• D.

It is impossible to tell