Electricity

Let's think: If the voltage is increased and the resistance stays the same, current will ____.

• Increase

• Decrease

• Stays the same

What is the definition of current?

• rate of flow of neutrons

• rate of flow of charges

• rate of flow of protons

• rate of flow of energy

Which subatomic particle is used in the process of electricity?

• Electrons

• Protons

• Neutrons

What is the unit of current?

• Volts

• Ampere

• Ohm

• Tesla

What happens to the current in a series circuit if one component is removed?

• The current in the entire circuit stops

• The current in the entire circuit increases

• The current in the entire circuit stays the same

A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly

• 10 ²⁰

• 10 ¹⁶

• 10 ¹⁸

• 10 ²

In the circuits (i) , (ii) and (iii) heat produced in the resistor or combination of resistors connected to a 12 V battery will be

• same in all the cases

• minimum in case (i)

• maximum in case (ii)

• maximum in case (iii)

Identify the circuit in which the electrical components have been properly connected.

• (i)

• (ii)

• (iii)

• (iv)

What is the minimum resistance which can be made using five resistors each of 1/5 Ω?

• 1/5 Ω

• 1/25 Ω

• 1/10 Ω

• 25 Ω

Unit of electric power may also be expressed as

• volt ampere

• kilowatt hour

• watt second

• joule second