Electricity Basics

What is an electric circuit?

• An electric circuit is a type of battery

• An electric circuit is a type of light bulb

• An electric circuit is a type of magnet

• An electric circuit is a closed loop through which an electric current can flow.

In which direction does current flow in a circuit? (conventional current)

• From negative to positive terminal

• in all direction

• From left to right

• From positive to negative terminal

Define electric current.

• Electric current is the flow of heat through a conductor.

• Electric current is the flow of air through a conductor.

• Electric current is the flow of water through a conductor.

• Electric current is the flow of electric charge through a conductor.

Define potential difference / voltage in electricity

• The amount of electric charge flowing past a particular point in an electric circuit per unit time.

• The amount of energy needed to move a unit charge from one point to another point in an electric circuit

• The measure of how much the component opposes the flow of electric current.

• The amount of electrical energy converted to other form by an electrical appliance in one hour.

Explain the concept of electrical resistance.

• Electrical resistance is a measure of how much a material improves the flow of electric voltage.

• Electrical resistance is a measure of how much a material opposes the flow of electric voltage.

• Electrical resistance is a measure of how much a material improves the flow of electric current

• Electrical resistance is a measure of how much a material opposes the flow of electric current.

What is the difference between series and parallel circuits?

• In series circuits, if one component fails, the entire circuit fails

• Parallel circuits have only one path for current flow

• Series circuits have higher resistance than parallel circuits

• The main difference between series and parallel circuits is how components are connected and how current flows through them.

The two circuits that have two light bulbs connected in SERIES are

• 1 and 2 only

• 1 and 4 only

• 2 and 3 only

• 2 and 4 only

Four identical bulbs are connected in the circuit shown. Three of the bulbs continue to light up when one bulb is removed from the circuit.

Which bulb is removed?

• bulb A

• bulb B

• bulb C

• bulb D

How does energy conservation apply to electricity?

• Energy conservation in electricity involves reducing energy waste and optimizing energy consumption through various practices.

• Energy conservation in electricity focuses on wasting energy and not optimizing consumption.

• Energy conservation in electricity means using as much energy as possible without any restrictions.

• Energy conservation in electricity involves increasing energy waste and minimizing energy consumption.

What are the consequences of damaged insulation in an electrical system?

• Decreased maintenance costs, extended equipment lifespan

• Enhanced safety measures, improved system performance

• Short circuits, electrical shocks, fires, and system malfunction.

• Increased efficiency, reduced energy consumption