Remedial Electrical Quantities

What are the two types of charges in nature?

• Positive and negative

• Positive and neutral

• Neutral and negative

• Protons and electrons

Which of the following statements about charges is correct?

• Positive charges attract other positive charges

• Negative charges attract other negative charges

• Positive charges attract negative charges

• All of the above

How can you distinguish between electrical conductors and insulators experimentally?

• By observing their color

• By measuring their weight

• By checking their hardness

• By testing their ability to allow electric current to flow

Which of the following materials is an example of an electrical conductor?

• Rubber

• Glass

• Copper

• Plastic

What is the unit of measurement for charge?

• Volts (V)

• Amperes (A)

• Coulombs (C)

• Ohms (O)

What is an electric field?

• A region with a high density of electrons

• A region in which charges experience a force

• A region with no electric charges

• A region with only positive charges

What is the direction of an electric field at a point?

• Towards the point

• Away from the point

• The same as the direction of the magnetic field

• The same as the direction of the current

What is electric current related to?

• The flow of heat

• The flow of charge

• The flow of water

• The flow of light

Which device is used to measure electric current in a circuit?

• Thermometer

• Voltmeter

• Ammeter

• Multimeter

How is electric current defined?

• The charge passing a point per unit voltage

• The charge passing a point per unit time

• The voltage passing through a point per unit charge

• The voltage passing through a point per unit time