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WorksheetsResit - Homework1 - 12.1
Total questions: 22
Worksheet time: 19mins
According to Ohm's Law, current equals the voltage divided by the _________.
Resistance
Inductance
Capacitance
Power
Conductance
If the current in an electrical circuit is constant, what will happen to the voltage if the resistance is increased?
The voltage will decrease
The voltage will increase
The voltage will stay the same
If there are 40 Volts and 5 Amps running through an electrical circuit, what is the resistance of the circuit?
1 Ohm
2 Ohms
4 Ohms
6 Ohms
8 Ohms
If the Voltage is increased and the resistance stays the same, Current will
Increase
Decrease
Stay the same
Increase and decrease periodically
If the Voltage stays the same and Resistance is increased, Current will
Increase
Decrease
Stay the same
Increase and decrease periodically
If the battery produced 12.6 Volts what would be the current flow for a 6 Ohm resistor?
2.1 Amps
2.4 Amps
1.71 Amps
15 Amps
In a closed circuit that consists of a battery and a resistor, 8 μC of charge is passing by a fixed point in 4 ms. How much is the resistance of the resistor if it’s voltage is 5 V?
2500 Ohm
1200 Ohm
2.5 Ohm
150 Ohm
One of the following is true about direct currents
It changes its direction periodically
It is produced using AC generators
Its value changes periodically
Its value stays constant
One of the following is true about electronic current.
It is a flow of positive charges
It is a flow of negative charges
It moves in the circuit from the positive terminal of the battery.
It cannot form a direct current
How much is the charge of 1019 electrons?
2 C
3.2 C
9 C
1.6 C
The electric current increases when :
The resistance increases
The voltage decreases
The amount of the moving charge increases
The charges move slower
One of the following is wrong.
Alternating current flows in one direction
Direct current flows in one direction
Conventional current is a flow of negative charges
Increasing voltage increases current
When the length of a metal wire increases, the its resistance __________.
Decreases
Increases
Stays the same
Increases and decreases periodically
Resistivity depends on one of the following.
The length of the conductor
The cross-sectional area of the conductor
The type of conductor's material
The resistance of the conductor
A wire has a resistance of 0.5 Ω and 20 cm length. If its cross-sectional diameter is 2 mm, find its resistivity.
3.6×10−2Ω.m
3.6×10−5Ω.m
1.9×10−7Ω.m
7.8×10−6Ω.m
The battery delivers more energy to the circuit when ________.
It applies less voltage
It moves more charges
It has lower electromotive force
it moves less charges
