WorksheetsInternal Resistance and emf
Total questions: 10
Worksheet time: 17mins
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?
Which formula is correct?
E=I(R+r)
E=V+r
E=V−r
E=Ir−IR
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
What is internal resistance?
the resistance inside the cell that increases with more current drawn from the cell
the resistance inside the cell that decreases with more current drawn from the cell
the resistance inside the cell that remains constant as the current drawn from the cell changes
the resistance inside each component which increases as more resistances are added in series
In this circuit, why the voltmeter reading is less than 5 V when the switch is closed?
There are no current flow
The current flow is not enough
There are heating in resistor
There are drop of voltage due to internal resistance
A car battery has an emf of 12V and an internal resistance of 0.005Ω. The terminal voltage when a load current of 100A is drawn is...
11.5 V
1.7 V
6.0 V
0.5 V
