Қаріп өлшемі
Жұмыс парақтарыET1 - Energy and Voltage
Total сұрақ: 48
Worksheet time: 35mins
Middle: 1.0A
Middle: 2.0A
Middle: 2.0A
Middle: 2.0A
Middle: 2.5A
Middle: 2.5A
Middle: 5.0A
Middle: 2.0A
Bottom: 3.0V
Bottom: 3.0V
Bottom: 0.75V
Bottom: 1.5V
In a series circuit...
the current is the same everywhere.
the current is split between components.
the voltage is the same everywhere.
the voltage is split between components.
Ammeters should always be connected in (a) .
In a series circuit, if one component breaks the others will remain on.
True
False
Voltmeters should always be connected in (a) around a component.
Which of these 4 circuits can be used to measure how the current varies with a change in voltage across a bulb?
What is the correct name for the unit for measuring resistance?
amp
volt
coulomb
ohm
A computer circuit board contains a 4 kΩ resistor and has a p.d. of 8 V across it.
What does p.d. stand for?
potential difference
potential divider
power difference
power divider
To get a large current to flow in a wire, you can either
increase the wire resistance or increase the supply voltage
increase the wire resistance or decrease the supply voltage
decrease the wire resistance or increase the supply voltage
decrease the wire resistance or decrease the supply voltage
Which of the following is the correct unit for charge?
coulomb
capacitance
current
charge
A 6 V light bulb is switched on for a short time. A 6 V battery transfers 2 C of charge to the bulb in this time. What energy has been transferred?
0.33 J
3 J
6 J
12 J
Which of the following is the definition of a 'volt'?
a joule per coulomb
a watt per coulomb
a joule per amp
a watt per ohm
The unit of potential difference can be expressed as
C s–1
J C–1
V A–1
J A–1
Bulbs C and D are identical. Which of the following is true?
the voltage across each bulb is identical
the voltage across C is greater than the voltage across D
the voltage across D is greater than the voltage across C
Compared to the voltage of the battery, the voltage of bulb C is
greater than the battery
less than the battery
same as the battery
Bulb C and D are identical. Compared to the voltage of D, the voltage of bulb C is
greater than bulb D
less than bulb D
same as bulb D
Compared to the current through the battery, the current through bulb C is
greater
less
same
State the formula linking potential difference, current and resistance.
V = I + R
V = I x R
V = I / R
V = I^2 * R
If the voltage across a resistor is 12V and the current passing through it is 2A, what is the resistance?
6
8
4
3
A resistor has a resistance of 10 ohms. If the current passing through it is 0.5A, what is the voltage across the resistor?
5 volts
2 volts
7 volts
12 volts
In a series circuit, if the voltage across one resistor is 6V and the voltage across another resistor is 4V, what is the total voltage across the circuit?
10V
0V
14V
2V
In a parallel circuit, if the current passing through one resistor is 0.5 A and the current passing through another resistor is 0.3 A, what is the total current passing through the circuit?
0.2A
1.3A
0.5A
0.8A
In a series circuit, if the voltage across one resistor is 8V and the current passing through it is 2A, what is the resistance?
2
4
16
6
In a series circuit, if the voltage across one resistor is 10V and the resistance is 5 ohms, what is the current passing through it?
2A
5A
1A
20A
Complete the equation: .............. = energy transferred / potential difference
Current
Time
Charge
Resistance
What does a voltmeter measure?
potential difference
resistance
charge
current
The electrical energy used if a charge of 5 C is supplied by a 12 V cell is....
2.2 A
60 A
2.2 J
60 J
What is the voltage of a cell if it uses 4.2 J of energy as it pushes 6 C of charge round a circuit?
0.7 v
26 V
0.7 V
26 v
A current of 0.5 A flows in a circuit. Calculate the charge flowing through the circuit in one minute.
0.5 C
30 C
120 C
Based on the graph, which of the following would be true regarding the relationship of voltage and current?
As voltage increases, current decreases.
Voltage will not affect current.
As voltage decreases, current increases.
As voltage increases, current also increases.
If the resistance of a bulb is 10 ohms and the current passing through it is 2A, what is the voltage across the bulb?
5V
10V
20V
15V
In a parallel circuit, if the voltage across each resistor is 5V and there are three resistors, what is the total voltage across the circuit?
5V
15V
10V
3V
What is the total resistance in a circuit if three identical resistors each of 3 ohms are connected in series?
1 ohm
3 ohms
9 ohms
6 ohms
