Electricity Introduction

What is electric current ?

• An electric shock

• Electrical appliances

• The flow of electric charges through a path

Answer explanation

The flow of electric charges through a path is known as electric current

Which of the following particle is responsible for the electric current in a wire?

• Neutron

• Positron

• Proton

• Electron

In an electric current, at any given point of time, all the electrons will be moving in the same direction.

• True

• False

What is a circuit?

• An outlet or switch

• A path which an electric current flows

• A poor conductor

What is voltage?

• The amount of energy used by a circuit
• The measure of the electrical potential difference between two points in a circuit
• The flow of electric charge through a circuit
• The measure of how much a material or device opposes the flow of electric current

Tags

Voltage

What is resistance?

• The measure of how much a material or device opposes the flow of electric current
• The flow of electric charge through a circuit
• The measure of the electrical potential difference between two points in a circuit
• The amount of energy used by a circuit

Tags

Resistance

What is the unit of measurement for resistance?

• Volts (V)
• Ohms (Ω)
• Watts (W)
• Amperes (A)

Tags

Resistance

What is current?

• The flow of electric charge through a circuit
• The measure of how much a material or device opposes the flow of electric current
• The amount of energy used by a circuit
• The measure of the electrical potential difference between two points in a circuit

Tags

Current

How long is a piece of string?

• Very long

• Not very long

• A bit long

• 7.45

Which terminal do electrons flow FROM in a circuit?

• Positive terminal
• Neither terminal
• Both terminals
• Negative terminal

Tags

Charge