Download 1- What is the total charge, in coulombs, of 35 × 10 33 electrons

1-
What is the total charge, in coulombs, of 35 × 1033 electrons?
Correct Answer: 5.6 × 1015 C
The charge on one electron is 1.6 × 10–19coulombs, and the total charge can be found by multiplying the
number of electrons by the charge per electron:
Q=
(35 × 1033) × (1.6 × 10–19) =
5.6 × 1015 coulombs
2-
Find the current in amps if 590 C of charge pass through a wire in 35 s.
Correct Answer: 16.9 A
3-
How many electrons are required to make a charge of 65
C?
Correct Answer: 4.06 × 1014
4-
If 550 C of charge pass through a wire in 1.5 min, find the current in amps.
Your Answer: 6.11 A
5-
If 0.883 × 1017 electrons flow through a conductor in 239 ms, what is the current?
Correct Answer: 59.11 mA
6-
If a current of 35 A exists for 1 min, how many coulombs of charge have passed through the wire?
Your Answer: 2.1 × 103 C
7-
The energy required to move 100 C of charge through a resistor is 500 J. What is the voltage across
the resistor?
Correct Answer: 5 V
8-
How many coulombs of charge pass through a wire in 3 min if the current is constant at 655 mA?
Your Answer: 117.9 C
9-
How much energy does a 12.6 V battery use to move 2.35 C through a circuit?
Correct Answer: 29.61 J
10- If the current in a conductor is constant at 1.75 mA, how much time is required for 5000 × 10 –6 C
to pass through the conductor?
Correct Answer: 2.86 s
11- How much charge passes through a battery of 6.3 V if the energy expended is 80 J?
Your Answer: 12.7 C
12- If 43.5 × 1020 electrons pass through a wire in 5 s, find the current.
Correct Answer: 139.4 A
13- If a current of 4 A passes through a resistor for 10 min, how much charge has moved through the
resistor?
Correct Answer: 2400 C
14- How many electrons pass through a conductor in 2 min if the current is 0.5 A?
Correct Answer: 3.74×1020 electrons
15- What is the current through a resistor if 2000 C have moved through it in 2 h?
Correct Answer: 277.8 mA
16- How many coulombs will be required to "blow" a 1 A fuse in 1 min?
Correct Answer: 60 C
17- A total energy of 330 J is used to sustain a current of 3.2 mA for 2 min through a resistance. What
is the voltage drop across the resistance?
Correct Answer: 859.4 V
18- What is the voltage between two points if 55 mJ of energy are required to move 40 × 10 17 electrons
between the two points?
Correct Answer: 85.8 mV
19- If the potential difference between two points is 35 V, how much work is required to bring 6 C from
one point to the other?
Your Answer: 210 J
20- Find the charge Q that requires 100 J of energy to be moved through a potential difference of 15 V.
Correct Answer: 6.67 C
21- How much charge passes through a battery of 24 V if the energy expended is 85 J?
Correct Answer: 3.54 C
22- If a conductor with a current of 175 mA converts 45 J of electrical energy into heat in 25 s, what is
the potential drop across the conductor?
Correct Answer: 10.3 V
23- What current will a battery with an Ah rating of 500 theoretically provide for 30 h?
Your Answer: 16.67 A
24- What is the Ah rating of a battery that can provide 0.8 A for 76 h?
Correct Answer: 60.8 Ah
25- For how many hours will a battery with an Ah rating of 32 theoretically provide a current of 1.75 A?
Correct Answer: 18.3 h