Class starter 2- Voltage

SI unit of potential difference is

• voltage

• volt

• watt

• ampere

What type of chemical reaction takes place in a battery?

• Combustion

• Endothermic

• Oxidation-reduction

• All of these

Terminal voltage is always lower than electromotive force.

• True

• False

Which one is correct statement?

• Voltmeter is connected in series

• ammeter is connected in parallel

• voltmeter is connected in parallel

• Doesn't matter

emf is the voltage measured in ________________circuit

• open

• closed

The voltage of a battery is an example of

• alternating current

• direct current

• both alternating and direct current

The batteries displayed in the picture are all identical 1.5 V batteries. The voltmeter shows the value

• 4.5 V

• 3 V

• 1.5 V

Are the batteries in series or in parallel?

• Series

• Paralle

Does the light shine in the given circuit?

• Yes

• No

What is the role of a switch?

• To open or close the circuit

• To increase voltage

• To measure resistance