emf and Potential difference
Presentation
•
Science, Physics
•
8th Grade
•
Medium
Angela Toh
Used 9+ times
FREE Resource
7 Slides • 16 Questions
1
Current and Potential difference
By Angela Toh
2
3
Multiple Choice
It is an energy supply by a battery/ electrical source to a unit of charge.
This refers to
Potential difference
Internal resistance
Electromotive force
Current
4
Multiple Choice
EMF is an abbreviation of
Electromotive force
Electric motive force
Electrical motive force
Both a and b
5
Multiple Choice
Instrument which transfers energy to electric charge in a circuit is
Battery
Voltmeter
Ammeter
Galvanometer
6
Multiple Choice
What is the function of a cell?
A conductor that connect the components together.
A method of opening or closing the circuit.
A source of electromotive force that drives electric charges around the circuit.
A load in which moving charges can do a useful job.
7
Multiple Choice
What is emf?
the electro motive "force" or the force on electrons
the electromotive "force" or the Voltage of a cell measured when there is no current flowing
the electromotive "field" or the Voltage of a cell measured when there is no current
the electromotive "force" or Voltage of a cell measured when connected to a circuit
8
9
Multiple Choice
It is a work done or energy supply to move a unit of charge from 1 point to another point in a closed circuit
This refers to
Internal resistance
Potential difference
Electromotive force
Resistance
10
Multiple Choice
Define potential difference
the work done, W in moving one coulomb of charge, Q from one point to another.
the work done, W in moving one CURRENT of charge, Q from one point to another.
the work done, W in moving one VOLTAGE of charge, V from one point to another.
11
Multiple Choice
Energy transfer per unit charge is
E.M.F
Current
Potential difference
Conventional current
12
Multiple Choice
What is this the definition of: the energy per charge (voltage) supplied by a source e.g. battery
emf
Potential difference
Voltage
Current
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14
15
Multiple Choice
A voltmeter arranged across the power supply measures
Potential difference
E.M.F
Current
Resistance
16
Multiple Choice
17
Multiple Choice
Define potential difference
The amount of energy per charge
The amount of charge per energy
The amount of charge per second
The amount of voltage per second
18
Multiple Choice
How must a voltmeter be connected?
In series
In parallel
To a power supply
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20
Multiple Choice
voltage or potential difference
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22
Draw
Label two points on this electrical circuit.
H for higher electrical potential
L for lower electrical potential
23
Draw
Label two points on this electrical circuit.
H for higher electrical potential
L for lower electrical potential
Current and Potential difference
By Angela Toh
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