Relation between Potential and Current

In a circuit with two 6V batteries in series, the total EMF is:

• 3V

• 12V

• 6V

• 9V

In an electrical circuit, current flows from:

• Positive to negative

• High resistance to low resistance

• Low potential to high potential

• Negative to positive

The relationship between voltage (V), current (I), and resistance (R) is described by:

• Kirchhoff's Law

• Ohm's Law

• Faraday's Law

• Newton's Law

If a circuit has a resistance of 6Ω and current of 2A, what is the voltage?

• 8V

• 4V

• 3V

• 12V

EMF stands for:

• Electromotive Force

• Electromagnetic Field

• Electric Magnetic Flux

• Electronic Magnetic Force

The potential difference across a battery is:

• Equal to its current

• Always changing
  

• Greater than its EMF

• Less than its EMF

What happens to the current when resistance increases (voltage constant)?

• Decreases

• Remains constant

• Increases

• Becomes zero

The potential difference between two points in a circuit is:

• Always equal to the EMF

• The work done per unit charge

• The work done to move a negative charge

• Always positive

Which device is used to measure voltage in a circuit?

• Ohmmeter

• Voltmeter

• Ammeter

• Wattmeter

Which statement about EMF is wrong?

• It's always equal to the terminal voltage

• It decreases with time

• It's the work done per unit charge

• It's measured in amperes