Quick Concept Check-3: Electric Fields & Charges Essentials

How does the concept of an electric field help in understanding the force between charges?

• A) By allowing force calculations in absence of one of the charges
• B) By showing force exists without a field
• C) By creating a space without interactions
• D) By allowing a test charge to measure field strength without being influenced

In the context of electric fields, what term describes a charge that only measures the effect of a source charge without influencing it?

• A) Source charge
• B) Static charge
• C) Test charge
• D) Field charge

What is the SI unit of electric field?

• 1. Volt
• 2. Ampere
• 3. Newton per Coulomb
• 4. Joule

What does a point charge Q produce in its surrounding?

• 1. Nothing
• 2. An electric field
• 3. A magnetic field
• 4. A gravitational field

According to Coulomb's law, what does charge Q exert on charge q?

• 1. A gravitational force
• 2. An electric force
• 3. A magnetic force
• 4. No force

What happens to the electric field when charge q is removed?

• 1. It disappears
• 2. It remains
• 3. It becomes negative
• 4. It becomes positive

What is the relationship between force F and charge q in the context of electric field?

• 1. F is independent of q
• 2. F is proportional to q
• 3. F is inversely proportional to q
• 4. F is equal to q

What direction does the electric field point for a positive charge?

• 1. Radially inwards
• 2. Radially outwards
• 3. Tangentially
• 4. Perpendicular

What is the effect of a test charge q on the source charge Q?

• 1. It has no effect
• 2. It attracts Q
• 3. It repels Q
• 4. It exerts an equal and opposite force on Q

What does the electric field E depend on?

• 1. Only on charge Q
• 2. Only on charge q
• 3. On the distance r from charge Q
• 4. On the mass of the charges