Current of Electricity

What does the arrows in the circuit represents?

• conventional current
• eletromotive force
• electron flow
• voltage

Which instrument is shown in the picture?

• voltmeter
• ammeter
• galvanometer
• multimeter

Define electromotive force.

• It is the work done by the source in driving charges around a complete circuit.
• It is the work done by the source in driving a unit charge around a complete circuit.
• It is a measure of the rate of flow of electric charge through a given cross-section of a conductor.
• It is a measure of the flow of electric charge through a given cross-section of a conductor.

The voltage across the terminals of a cell when the switch is closed is called

• E.M.F

• Potential difference

What does the voltmeter reading show?

• The eletromotive force of the electrical source
• The electromotive force of the bulb
• The potential difference across the bulb
• The potential difference across the electrical source

• 2.1 A

• 75.6 A

• 0.5 A

• 15 A

what is the resistance of the resistor in the circuit shown in the diagram?

• 0.5Ω

• 2Ω

• 3Ω

• 18Ω

What is the potential difference across the 2Ω resistor?

• 0.3 V

• 3V

• 4V

• 12V

3J of energy is dissipated from a circuit when 6C of charge flows through the cell. What is the emf of the cell?

• 0.5V

• 2V

• 4V

• 18V

What does 5A refer to?

• 5 Coulombs of charge flows through a point in 1 second

• 5V of electricity across 1 ohm of resistance

• 5V of electricity causing 1C of charge to flow

• 5C of charge flowing through a point