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WorksheetsElectric Charge and Ohm's Law
Total questions: 15
Worksheet time: 13mins
Which of the following is true about electric current?
It is the flow of neutrons.
It is the flow of photons.
It is the flow of quarks.
It is the flow of electrons.
Which of the following is the unit of electrical resistance?
Ampere
Coulomb
Ohm
Volt
In a simple DC circuit with a constant voltage, where the resistance increases, what happens to the current?
The current decreases.
The current increases.
The current stops.
The current remains constant.
Which of the following is the unit of voltage?
J/s
kg.m/s2.m/s
N.m/s
J/C
Which of the following is equal to an Ohm
Ω ?J/s
A/V
V/A
J/C
Which of the following is NOT true about the resistance of a material?
It is dependent to the resistivity (specific resistance) of the material.
Resistance is directly proportional to the length of the material.
Resistance is inversely proportional to the cross-sectional area of a material.
Resistance is directly proportional to the cross-sectional area and inversely proportional to the length and resistivity of the material.
Which of the following converts electric energy into heat energy?
Charge
Resistance
Power
Voltage
Which of the following defines a Coulomb per second (C/s)?
Ampere
Ohm
Watt
Volt
Which of the following provides the voltage needed to force current (electrons) through the circuit?
Conductor
Control Device
Load
Source
How much voltage is required to cause 1.6 amperes in a device that has 50 Ω resistance?
0.032 V
31.25 V
40 V
80 V
A 10-Ω resistor has a constant current. If 1200 C charge flow through it in 4 minutes, what is the value of the current? Solve the current using the equation below;
I=tQ where I is the current, Q is the charge (in C)and t is the time(in s).0.2 A
5.0 A
50 A
300 A
Which of the following is the unit of current ?
Kilowatt-hour
Coulomb
Coulomb/second
Volt
What potential difference is required to cause 4.0 A to flow through a resistance of 330Ω?
A. 121 V
334 V
825 V
1320 V
What is the resistance needed to cause a 20-A current flow with a 100V battery?
0.2 Ω
5 Ω
200 Ω
2000 Ω
If a charge of 12 C passes through a computer in 2 minutes, what is the average current through the computer?
0.1 A
6 A
24 A
10 A
