WorksheetsEMF
Total questions: 15
Worksheet time: 14mins
From diagram, what 1.5 V refers to
Internal resistance
Potential difference
Electromotive force
Voltage
From the graph, what is given by the gradient?
Resistance
Internal resistance
Potential difference
Electromotive force
What is the electromotive force of battery?
0.5 V
1.0 V
1.5 V
2.0 V
Calculate the internal resistance, r
0.1 ohm
0.2 ohm
0.3 ohm
0.4 ohm
It is an energy supply by a battery/ electrical source to a coulumb unit of charge.
This refers to
Potential difference
Internal resistance
Electromotive force
Current
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
What is the reading of voltmeter when the switch is closed?
What is the value of the internal resistance?
Correct
ϵ=V+Ir
ϵ=I(R+r)
ϵ=V
A battery of e.m.f. 12 V and internal resistance 1.5 Ω was connected to a 4.5 Ω resistor, what is the value for current?
4A
6A
2A
8A
The gradient of this line represents the
internal resistance
emf of the cell
power of the cell
resistance of the circuit
The "y" intercept of this graph represents the
internal resistance
total resistance
total voltage
emf of the cell
Look at the graph and use it to work out ε and r
ε = 0.5V, r = 1.2Ω
ε = 1.2V, r = 0.8Ω
ε = 1.2V, r = 0.5Ω
ε = 0.8V, r = 0.5Ω
rheostat
resistor
thermister
variable capacitor
variable resistor
