What is the SI unit of electric current?

• Ampere (A)

• Coulomb (C)

• Volt (V)

• Ohm (Ω)

What does a current of 1.0 A represent in terms of charge?

• 1.0 Coulomb per second

• 1.0 Coulomb per minute

• 1.0 Coulomb per hour

• 1.0 Coulomb per millisecond

What is the direction of the magnetic field around a current-carrying wire according to the right-hand thumb rule?

• In the direction of the thumb

• In the direction of the fingers

• Opposite to the thumb

• Perpendicular to the wire

What happens to the magnetic field strength when the number of coils in a solenoid is increased?

• It decreases

• It remains the same

• It increases

• It becomes zero

Who discovered the connection between the magnetic field and electric current?

• Hans Christian Oersted

• André-Marie Ampère

• Michael Faraday

• Nikola Tesla

What is the relationship known as that describes the strength of a magnetic field in relation to electric current?

• Oersted's Law

• Faraday's Law

• Ampere's Law

• Newton's Law

What did Oersted's experiment demonstrate?

• Electricity can induce magnetism

• Magnetism can induce electricity

• The strength of electric current

• The direction of electric current

What is electromagnetic induction?

• Generating electricity from magnets

• Inducing magnetism from electricity

• Both A and B

• None of the above

What is the effect of increasing the current in a coil on the magnetic field strength?

• It decreases the strength

• It has no effect

• It increases the strength

• It reverses the direction

What is the charge of an electron?

• 1.6 × 10^-19 C

• -1.6 × 10^-19 C

• 1.9 × 10^-16C

• -1.9 × 10^-16C